John Preston Safety12 Comes Pint Northamptom St NW Wasbinpo DC 20015 colunm provided addms Items concern mgardhw safety aspects model aviation acdvldes Contet die column however die opinion author does necusaflyimpumsent official position die Academy Model Aeronautics prop hand woh. Keep RC transmitter long use wing rubberbands Con tact lens safety fable MORE fingers-in-the-prop guess some truth proverb never rains pours Last months column began finger-in-the-prop incident stated first heard quite some time Just week after mailed column Model Aviation s editorial offices received letter Texan modeler Robert McMullen re lated MA Associate Editor Ross McMullen included color photograph right hand black-and-white copy photo should see color appearing column shows extent injuries resulted what appear about nine swipes propeller Ill let Bobs letter tell hap pened inside right thumb three palm right hand 10 x 6 glass-reinforced plastic prop turned good 40 two-stroke Im thankful following rule fly alone friend drove emergency room spent some 2 hours having 59 stitches put close wounds could 68-year-old man 40 years modeling experience let thing like happen Believe have given matter lot thought following excuse merely best explanation have able come up First plug clip old McDaniel NiStarter worn held glow plug no problem Telemaster 40 tricycle gear holding down engine also held plane true Foxbat its side-mounted engine system held Ni-Starter against glow plug palm left hand gripping entire engine thumb index finger restrain plane worked fine under normal conditions things tend change normal Second small factor believe con tributed accident gear pushed back slightly some rough land ings plane did sit firm taildown stance should have Third problem starting engine ap parently due glow plug would start just bump Sullivan starter would die Ni-Starter removed second glow plug no better put new starting upright-mounted engine just automatic note position throttle However case side-mounted engine apparently effort keep engine running opened throt tle beyond its normal starting setting Also several starts heated engine really comfortable grip held NiStarter place What happened next happened quickly just seems blur think about held NiStarter place hit spinner starter engine roared plane lurched dropped starter grabbed fuselage just behind wing sickening thud engine died knew hurt dly reflex pain con scious action gripped right hand t fist Evidently luck kept bleeding minimum pain told both thumb palm cut didnt know multiple cuts until doctor opened hand emergency room amazed little damage done tendons Continued page 16 pilot error no doubt about summer 1948 bought first model aircraft engine Atwood 60 came factory equipped glow plug first safety rule learned KEEP YOUR FINGERS AND HAND AWAY FROM THE PROP June 1 1989 brief instant failed obey rule result six chops across Score Propeller 9 human 0 Robert McMul len tells us happened him months Safety column moments care lessness eradicated record over 40 years caution Dont let happen \ . ON TOO MANY 14 Model Aviation 1~ U2BA$ Celebrating 10 years producing largest selection giant scale kits available today Design building integrity scale fidelity scale flight characteristics standard IKON NWST 22 kits choose STINSON SR8 1/5 SCALE 100 $37500 NEW VHS-4HOUR FORMAT \r~Y tape youve Ki waiting finally here! youre new hobby just want learn secret wood plane construction tor YOU PLANE VIDEO Presents BUILOINC IT RIC11T THF IRT TIUF FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON Radio installation o Straight wing building o Installing hinges 0 Shear webbing Applying PO cloth o Servo installation o Setting up new radio Built-up tail surfaces o Slab tail surfaces o Aileron installation 0 Fuel tank installation o New engine setup o Fuselage construction OBUILDING STRAIGHT o Installing pushrods o covering film o Eliminating warps o Aligning Balancing o Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have 17S40 MasterCard VISA ready call OR mail $24g5 S & H TO /PLANE VIDEO MasterCardP0 Box 2312B Des Moines IA 50322 Iowa residents add 4% sales tax 18003838251 telephone consultation orthopedist determined no tendon repair indicated will have limited use right thumb two months am also sure scar tissue will re strict use thumb permanently re ally could have much worse have gone over thing mind thousand times am now convinced lacked about T H-A-A-A-T much clearing prop first cut small across center swirl makes thumbprint evident pitch prop pulled deeper hand lick until resistance stopped en gine Writing has difficult First about much dare thumb embarrassment confessing such careless stupid mistake am doing thought mind may prevent similar accident happening other modeler never believed could hap pen mebut did Im glad Bob mentioned follow ing rule fly alone acci dent occurred Whenever Ive mentioned past columns Ive received critical letters some readers continue believe typ ical model airplane accident model will strike another person Therefore fly alone obviously sure way avoid such accident dont have statisti cally valid data back up would venture say typical model-airplane-related injury may require emergency room treatment self-inflicted other words own worst enemy comes safety flying field Ive said before Ill say again Never Fly Alone Continued page 18 old timer perfectly proportioned modeling Curtiss Robin 049 EngInes -channel A/C 41 Wingspan Electric Power OptIonal $22i5 v, viva Very few lull scale airorah ore ideally nuited model flight appealing aid curtis Rabin born iv spruce linen age beautifully pmportioned rubber electric glow engines Easy fan build trainer-like iv performance Flyhee Models Calalog 506 Pfovv 7031 2739593 FLYLINE MODELS INC USA Great American Hobbles ENGINES PLANES RADIOS ACCESSORIES FUEL COD-VISA/MC 1800-542-1199 INFO 615868-8213 PO Box 4508 Nashville Tennessee 37216 2-6 pm Central Time Mon thru FrI Closed Sat Sun 16 Model Aviation 1/4 SCALE 96 $19750 tIOA AA EDO FLOATS 1/4 SCALE 46 SPERRY MESSENGER 1/4 SCALE 50 $16550 ruat v Transmitter On/Off switches couple weeks ago helping judge Scale contest bumped Bill Musser flies Howard County RC club Maryland models usually have two engines Bill related re cent incident experienced involved new programmable radio just pur chased Since have no experience pro grammable radios dont know whether like Bill purchased receiver loses transmitter signal centers servos least thats way comes factory unless reprogram something else Anyway Bill fired up twin 40s scratch-built model proceeded make some engine idle adjustments doing transmitter neck strap became entangled On/Off switch before time react flipped switch Off position servos immediately centered themselves including throttle servo youve ever experi enced thrust two 40s half throttle will know few seconds Bill hands full Fortunately managed get things back under control model getting away him moral story re program programmable radio soon buy throttle servo moves fully closed position upon loss transmitter sig nal Another incident involving transmitter being inadvertently turned off reported Bob Bingaman Sunbury PA Bob pur chased new Airtronics radio control Flying Quaker model Bob finally got around building after thinking about some 50 years Following Bobs own words describe what happened chose Airtronics Vanguard FM sixchannel radio because meets 1991 RC equip ment specifications operation 20 kHz fre quency spacing didnt want lose Quaker interference other modelers Quaker flew beautifully Vanguard radio worked flawlessly However flight using throttle trim lever control engine slow flyby altitude about 100 ft Sud denly Quaker made sharp left turn its nose down dove ground No matter hard tried could get out its dive landed about 50 ft flight line happy did hit other fliers As Quaker lay ground thought might just well turn off transmitter surprise did have turn off al ready offi guessed using throttle trim lever inadvertently turned off transmitters power switch No transmitter no matter good will send out signal power switch Off position Bob believes transmitter should have equipped guard around power switch prevent its inadvertent operation memory correct seem remember about 10 years ago some transmitters equipped flipup cover over power switch Maybe RC transmitters should have On/Off switches located somewhere other front panel Any readers wish comment Rubberbands An article Transmitter newsletter Belleville RC Fliers concerning rubberbands recently caught eye didnt have credit Im assuming written editor Darwin Evelsizer Since Ive wit nessed demise number model airplanes OTYFUELiGAL 4GAL24GALSOGAL12BGsI 54 GAL TOTALS ordered MIXTUREI DRUMAMT RED MAX PREMIUM FUELII fuel beginners ft sport flyers should use Avell synthetIc castor blend RED MAX 0$999$749$729$689$599$150 RED MAX5$1152$864$841$772$691$212 RED MAX 10$1288$965$939$862$772$286 _______ RED MAX 12$1372$1029$1002$919$823$301 _______ RED MAX15$1458$1094$1065$977$875$336 _______ RED MAX RACING FUEL Trophy winner planes boets ft cars two boat blends castor ok up 40% nlcro RED MAX2O$1775$1332$1296$1190$1066$464 RED MAX25$1965$1474$1435*1317$1179$641 RED MAX4O$2539$1905$1894$1701$1524$774 RED MAX 50$2922$2192$2133$1988$1753$929 RED MAX 80$3305$2479$2413$2214$1983$1084 RED MAX 86$3497$2622$2562$2343$2088$1162 RED MAX 4-CYCLE FUEL Eliminates detonatIon ft kickback 4-cycle enginas smoother Idle ft mon power 104 CYCLE$1363 $1022 $995 $913 $818$296 154 CYCLE$1555 $1186 $1135 $1042 $933$375 RED MAX HELICOPTER FUELI Einremely smooth running extre defoamer drk color specIal heavy oil halicptrs lOHelcopte$1391 *1043 $1016 $932 8835$309 iSHeScoprer$1583 $1187 $1188 $1080 $880$386 RED MAX PERFORMANCE FUELI High flash point heavy oil use tuned pIpes ducted fan ft other heavy dty app S Performance$231 ________ 10 Performance$309 _______ lsPerforrnanceI $1200$900$876$804$720 _____$1391$1043$1018$932$835 ______$1583 $1187 $1155 $1080 $980 RED MAX PATTERN FUEL Proven best fuel pattern engines using pumps tuned pIpes 5 Pattern$1195$ 895 $ 870 $ 795 $695 10 Pattern$1375$1035 $1009 $ 926 $825 l5Pattern$1576 $1175 $1145 $1050 $940 SUPER TIGER 3000 FUEL Beat fuel Super Tiger 2000-4000 engines _____Superliger3000$1288$965$939$862$772 $225 ________ $299 _________ *375 ________ Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs Secret gredients keep engine last ing longer 18 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD sdd $2 per cartonl Personal checks may held until cleared RED MAX FUEL Continued page 20 RED MAX DIESEL FUEL Superior diseal back list popular demand customers Ball Bearings $1767 $1328 $1290 $1164 $1080 DiinelPlakBeaings$l867 $1426 $1390 $1294 $1180 running _____ power fully other 100% money back guaran tee com pletely sat isfied reason Red Max has _____ more power better idle better wear char acteristics _____ other fuel $268 ______ Grand Total SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid$1288 $965 $939 $862 $772*284 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call prica Mm gallon boatscarshellcopters-speed-pattern-scaie-/u scale-kavsn-Ignitionst3000 PLEASE PRINT CITY STATE ZIP Quite few airplanes field espe cially ARFs use tried-and-true method securing wing fuselage rubberbands Two questions arise rub berbands use plane what after done tivine mans Dont look specific number Rubberbands vary too much elastic ity size strength number rieht Put several side crossed straight equally OK attempt pull leading edge away fuselage saddle ou can reasonable ease need rubberbands Put what think enough add tso wife kids grandma three eirlfriend mistress can also add two Aunt Matilda happen like Posttlight disposition done fly ing day best thing rub berbands remove airplane pick up ground throw away absolutel insist keeping take home squirt little dish soap hands thoroughl massage soap rubberbands next step rinse completely lay out paper towel dry Use second time THROW THEM AWAY Dont use twice hot sunny da throw away after use sun deteriorates rubber very quickly im going add tip own rubberband users Dont forget reinforce trailing otritued ott page 22 vYing pan 01 Engine 90 2Cyc Wing Area 1100 sq 1218 4cyc Mac hine Cut Wood Kit including wire landing gear & wing jaining hdwe VISA & MC accepted $120 Add 500 past & handling Add 300 far COD Ohia residents add 60% tax Far free Cata lag send SASE ta Air Flair1-513-878-7487 PO Box 2075 Pairbarn Ohia 45324 20 Model Aviation due use insufficient number deterior turn printer airfoil plotter sith.. ated rubberbands hold wing thought would good idea reproduce article FOILED AGAIN! lllI PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEETED WINGS ENTER DATA EASILY VLA iNTELLIGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION o INCLUDES I8PAGE ILLUSTRATED USER MANUAL $3995d Rq.' tOMPC T AT mbk cofl ,pen & pw SO Ae Odoo o~f25oJ5doAo 50~i 0000*0 '0 000000 CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 ~N\ \ORIGINALS/ A-i Husky Christen Industries represents rebirth classic Super Cub Byron Originals brings Husky complete scale components features totally unlike anything currently available Cub kits-features like detailed handlayed fiberglass fuselage cowl conventional wire cut wings operational cabin door scale single slot flap hinges scale strut anchors Easy gentle Cub-style flying natural Byron Husky ll-flap take offs 15 20 feet plus aerobatic prowess expected Byron kit youre looking traditional Cub flying flair excitement Byron Originals can bring end search Byron A-i Husky detailed Info-Pack send $200 Catalogs just $300 See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels edge wing root rubberbands pass over doesnt take long rubberbands chew up balsa trailing edge especially catch wing tip hard landing Contact lens warning True false Although didnt see apparently May 1989 issue AMA National Newsletter contained warn ing contact lens users received copy same warning over five years ago after checking out found based ac tual incidents facts What warning stated contact lenses can become fused cornea eye wearer looks electri cal arc eg welding arc John Worth recently forwarded copy letter received subject Vin cent King OD PhD Dr King Professor Optometry Ferris State University Op tometry Big Rapids MI has PhD Vi sual Science also 30-year veteran con tact lens wear has builder/basher model airplanes few years longer letter stated no basis injury eye wear ing contact lens caused exposure electri cal arc fact contact lens will absorb very small amount radiation will therefore provide some slight really inconsequential de gree protection energy radiating spark person wearing contact lenses no greater risk eye injury radiation source person wearing contact lens es found interesting newspaper clipping similarly debunking contact lens warning several attached Dr Kings Continued page 146 22 Model Aviation SPECIFICATIONS Wing Span 105Channels S Length 67WWeight 1920 lbs Power Super Tigre 2500 & 3000OS 240 Quadra 35/40 EquIvalent Engines aqp/Made Amerkzo CAJ JWith American Technology YMODEL EtlNESa BLUES CA getting down get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 TestorlMcCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Cott erte free information RJL Industries PO Box 5 - Sierra Mad-e CA 91024 818 359-0016 ETPQY SAFE oxv unique two-component epoxy laminating system developed offer user satest highest quality laminating resin available 1 Pt Kit- $1800 t- $2600 Glass Cloth 58 oz/sq yd 38x6ft-$90038xlSft-$1900 38 x 30 ft $3500 add $300 Ship & Hand above items Send SASE additional information AcPs Ughtweight composite Materials Order COD Send check Money Order AEROSPACE COMPOSITE PRODUCTS P0 Box 16621 Dept Irvine CA 92714 Source Lightweight Materials PRECISION MODEL PRODUCTS uzZZ7Is# Made U S BARSTOCK ALUMINUM SPINNERS Pan No Size TT-150-B .. 1-1/2 TT-175-B . 1-3/4 TT-200-B 11-225-B .. 21/4 11-226-B .. 2-1/4 FAI . TT-250-B . 2-1/2 TT-251-B . 2-1/2 FAI .. TT-275-B 3/4 TT-276-8 .. 2-3/4 FAI .. 11-300-B 11-301-BPAl TT-325-B . 3-1/4 TT-350-B /2 TT-375-B .. 3-3/4 11-400-B 4 RetailApprox PriceWeight $1395058 02 149509502 159510002 169516002 189515002 189519002 209517002 229522002 249520002 269526002 289525002 369534002 499547002 599552002 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add 5300 Per Spinner PROP NUT ADAPTORS Part No Size TT-140-A . 1/4-28 TT-147-A 4-28/7mm . TT-610-A 10mm TT-710-A 10mm TT-516-A '5/16-24 TT-518-A .. 5/16-24/8mm IT-BiD-A x 10mm TT-825-A . 8x 125mm TT-375-A3/8-24 TT-125-A x 125mm Retail Approx Price Weight $495 061 02 49506102 49506302 49508202 495 602 49507602 495076oz 495 .. 075 02 595 117 02 595 02 3 Pieces Nut Washer anti Machined Bushing Add S350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 other 357th alumnus Chuck Yeager alive well TV again again think single-seat Dornier-335 Air Space Museum Washington DCpossibly same wife Helen beginning push 70 pretty hard both still ac tive licensed pilots have dabbling RC several years am enclosing picture freehand scratch-builts little 50 Saito powered 514-pounderreferred Round big 13-lb 8footer named Mr Big Its powered Zenoah 23 Both fly very well Harvey Mace Ft Bragg CA Safety/Preston Continued page 22 letter stated story apparently first sur faced 1967 So happen prefer assem bling models components arc welding rather gluing also weareontact lenses dont alarmed saw warning National Newsletter Its just true Have another safe Fly Baby/Mathews Continued page 33 site Test range free surface movement deflections per plans engine carbure tor needle settings engine-on radio op eration Finally important make sure model balances slightly ward center-of-gravity shown plans Add ballast needed Dont fly model tail-heavy everything checks out OK Fly Baby ready big try field head wind add little right rudder advance throttle youre air borne 12 ft adding up elevator youre taking off downwind Remember climb rate func tion engine speed elevator Dont horse airplane around heavy-handedly gentle caresses thats needed Take model up bit throttle down dead slow Still isnt sinking much Find little thermal shut engine off Now isnt something kind flying too sedate taste try some slow-speed touch-andbumps Hows easy Did ever prettier Whatever style flying youll find Old-Timer will oblige Versatile brisk smooth responsive Fly Baby will exactly what want See yourself isnt up date Old-Timer could ask dB Facts/Abbott Continued page 35 erates Quiet whisper 20 dB Conversation 65 dB Loud orchestra 80 dB Start danger 90 dB Amplified rock band 110 dB Threshold pain 130 dB Federal agencies have established recom mended standards safe noise exposure eight hours per day 90 dB two hours per day 100 dB less one-quarter hour per day 115 dB Lets reexamine AMA FAI cri teria Current AMA90 dB 9 ft Old FAIl00 dB meter Current FAI98 dB three meters order compare recommenda tions need convert single distancein case 9 ft Thats easy enough involves converting meters feet meter ft applying inverse square law discussed above results Current AMA90 dB 9 ft Old FAI912 dB 9 ft Current FAI988 dB 9 ft As can see new FAI regulation considerably less stringent old 146 Model Aviation Matched Performance System TOP PERFORMANCE K&B ENGINES AirplaneManse K&B FUELS K&B Glow PLUGS 9 Blends4 Choices Free Flight Kits Supplies Rubber er Power Kits Scale Old Timer Too Co Electric Motors Rubber Tissue Cox Parts Rubber Accessories Winding Hooks Timers Nitrate Dope CATALOGUE $200 CAMPBELLS CUSTOM KITS PO BOX 5996 LAKE WORTH FL 33466-5996 Letters Editor Continued page 12 V
Edition: Model Aviation - 1989/10
Page Numbers: 14, 16, 18, 20, 22, 146
John Preston Safety12 Comes Pint Northamptom St NW Wasbinpo DC 20015 colunm provided addms Items concern mgardhw safety aspects model aviation acdvldes Contet die column however die opinion author does necusaflyimpumsent official position die Academy Model Aeronautics prop hand woh. Keep RC transmitter long use wing rubberbands Con tact lens safety fable MORE fingers-in-the-prop guess some truth proverb never rains pours Last months column began finger-in-the-prop incident stated first heard quite some time Just week after mailed column Model Aviation s editorial offices received letter Texan modeler Robert McMullen re lated MA Associate Editor Ross McMullen included color photograph right hand black-and-white copy photo should see color appearing column shows extent injuries resulted what appear about nine swipes propeller Ill let Bobs letter tell hap pened inside right thumb three palm right hand 10 x 6 glass-reinforced plastic prop turned good 40 two-stroke Im thankful following rule fly alone friend drove emergency room spent some 2 hours having 59 stitches put close wounds could 68-year-old man 40 years modeling experience let thing like happen Believe have given matter lot thought following excuse merely best explanation have able come up First plug clip old McDaniel NiStarter worn held glow plug no problem Telemaster 40 tricycle gear holding down engine also held plane true Foxbat its side-mounted engine system held Ni-Starter against glow plug palm left hand gripping entire engine thumb index finger restrain plane worked fine under normal conditions things tend change normal Second small factor believe con tributed accident gear pushed back slightly some rough land ings plane did sit firm taildown stance should have Third problem starting engine ap parently due glow plug would start just bump Sullivan starter would die Ni-Starter removed second glow plug no better put new starting upright-mounted engine just automatic note position throttle However case side-mounted engine apparently effort keep engine running opened throt tle beyond its normal starting setting Also several starts heated engine really comfortable grip held NiStarter place What happened next happened quickly just seems blur think about held NiStarter place hit spinner starter engine roared plane lurched dropped starter grabbed fuselage just behind wing sickening thud engine died knew hurt dly reflex pain con scious action gripped right hand t fist Evidently luck kept bleeding minimum pain told both thumb palm cut didnt know multiple cuts until doctor opened hand emergency room amazed little damage done tendons Continued page 16 pilot error no doubt about summer 1948 bought first model aircraft engine Atwood 60 came factory equipped glow plug first safety rule learned KEEP YOUR FINGERS AND HAND AWAY FROM THE PROP June 1 1989 brief instant failed obey rule result six chops across Score Propeller 9 human 0 Robert McMul len tells us happened him months Safety column moments care lessness eradicated record over 40 years caution Dont let happen \ . ON TOO MANY 14 Model Aviation 1~ U2BA$ Celebrating 10 years producing largest selection giant scale kits available today Design building integrity scale fidelity scale flight characteristics standard IKON NWST 22 kits choose STINSON SR8 1/5 SCALE 100 $37500 NEW VHS-4HOUR FORMAT \r~Y tape youve Ki waiting finally here! youre new hobby just want learn secret wood plane construction tor YOU PLANE VIDEO Presents BUILOINC IT RIC11T THF IRT TIUF FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON Radio installation o Straight wing building o Installing hinges 0 Shear webbing Applying PO cloth o Servo installation o Setting up new radio Built-up tail surfaces o Slab tail surfaces o Aileron installation 0 Fuel tank installation o New engine setup o Fuselage construction OBUILDING STRAIGHT o Installing pushrods o covering film o Eliminating warps o Aligning Balancing o Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have 17S40 MasterCard VISA ready call OR mail $24g5 S & H TO /PLANE VIDEO MasterCardP0 Box 2312B Des Moines IA 50322 Iowa residents add 4% sales tax 18003838251 telephone consultation orthopedist determined no tendon repair indicated will have limited use right thumb two months am also sure scar tissue will re strict use thumb permanently re ally could have much worse have gone over thing mind thousand times am now convinced lacked about T H-A-A-A-T much clearing prop first cut small across center swirl makes thumbprint evident pitch prop pulled deeper hand lick until resistance stopped en gine Writing has difficult First about much dare thumb embarrassment confessing such careless stupid mistake am doing thought mind may prevent similar accident happening other modeler never believed could hap pen mebut did Im glad Bob mentioned follow ing rule fly alone acci dent occurred Whenever Ive mentioned past columns Ive received critical letters some readers continue believe typ ical model airplane accident model will strike another person Therefore fly alone obviously sure way avoid such accident dont have statisti cally valid data back up would venture say typical model-airplane-related injury may require emergency room treatment self-inflicted other words own worst enemy comes safety flying field Ive said before Ill say again Never Fly Alone Continued page 18 old timer perfectly proportioned modeling Curtiss Robin 049 EngInes -channel A/C 41 Wingspan Electric Power OptIonal $22i5 v, viva Very few lull scale airorah ore ideally nuited model flight appealing aid curtis Rabin born iv spruce linen age beautifully pmportioned rubber electric glow engines Easy fan build trainer-like iv performance Flyhee Models Calalog 506 Pfovv 7031 2739593 FLYLINE MODELS INC USA Great American Hobbles ENGINES PLANES RADIOS ACCESSORIES FUEL COD-VISA/MC 1800-542-1199 INFO 615868-8213 PO Box 4508 Nashville Tennessee 37216 2-6 pm Central Time Mon thru FrI Closed Sat Sun 16 Model Aviation 1/4 SCALE 96 $19750 tIOA AA EDO FLOATS 1/4 SCALE 46 SPERRY MESSENGER 1/4 SCALE 50 $16550 ruat v Transmitter On/Off switches couple weeks ago helping judge Scale contest bumped Bill Musser flies Howard County RC club Maryland models usually have two engines Bill related re cent incident experienced involved new programmable radio just pur chased Since have no experience pro grammable radios dont know whether like Bill purchased receiver loses transmitter signal centers servos least thats way comes factory unless reprogram something else Anyway Bill fired up twin 40s scratch-built model proceeded make some engine idle adjustments doing transmitter neck strap became entangled On/Off switch before time react flipped switch Off position servos immediately centered themselves including throttle servo youve ever experi enced thrust two 40s half throttle will know few seconds Bill hands full Fortunately managed get things back under control model getting away him moral story re program programmable radio soon buy throttle servo moves fully closed position upon loss transmitter sig nal Another incident involving transmitter being inadvertently turned off reported Bob Bingaman Sunbury PA Bob pur chased new Airtronics radio control Flying Quaker model Bob finally got around building after thinking about some 50 years Following Bobs own words describe what happened chose Airtronics Vanguard FM sixchannel radio because meets 1991 RC equip ment specifications operation 20 kHz fre quency spacing didnt want lose Quaker interference other modelers Quaker flew beautifully Vanguard radio worked flawlessly However flight using throttle trim lever control engine slow flyby altitude about 100 ft Sud denly Quaker made sharp left turn its nose down dove ground No matter hard tried could get out its dive landed about 50 ft flight line happy did hit other fliers As Quaker lay ground thought might just well turn off transmitter surprise did have turn off al ready offi guessed using throttle trim lever inadvertently turned off transmitters power switch No transmitter no matter good will send out signal power switch Off position Bob believes transmitter should have equipped guard around power switch prevent its inadvertent operation memory correct seem remember about 10 years ago some transmitters equipped flipup cover over power switch Maybe RC transmitters should have On/Off switches located somewhere other front panel Any readers wish comment Rubberbands An article Transmitter newsletter Belleville RC Fliers concerning rubberbands recently caught eye didnt have credit Im assuming written editor Darwin Evelsizer Since Ive wit nessed demise number model airplanes OTYFUELiGAL 4GAL24GALSOGAL12BGsI 54 GAL TOTALS ordered MIXTUREI DRUMAMT RED MAX PREMIUM FUELII fuel beginners ft sport flyers should use Avell synthetIc castor blend RED MAX 0$999$749$729$689$599$150 RED MAX5$1152$864$841$772$691$212 RED MAX 10$1288$965$939$862$772$286 _______ RED MAX 12$1372$1029$1002$919$823$301 _______ RED MAX15$1458$1094$1065$977$875$336 _______ RED MAX RACING FUEL Trophy winner planes boets ft cars two boat blends castor ok up 40% nlcro RED MAX2O$1775$1332$1296$1190$1066$464 RED MAX25$1965$1474$1435*1317$1179$641 RED MAX4O$2539$1905$1894$1701$1524$774 RED MAX 50$2922$2192$2133$1988$1753$929 RED MAX 80$3305$2479$2413$2214$1983$1084 RED MAX 86$3497$2622$2562$2343$2088$1162 RED MAX 4-CYCLE FUEL Eliminates detonatIon ft kickback 4-cycle enginas smoother Idle ft mon power 104 CYCLE$1363 $1022 $995 $913 $818$296 154 CYCLE$1555 $1186 $1135 $1042 $933$375 RED MAX HELICOPTER FUELI Einremely smooth running extre defoamer drk color specIal heavy oil halicptrs lOHelcopte$1391 *1043 $1016 $932 8835$309 iSHeScoprer$1583 $1187 $1188 $1080 $880$386 RED MAX PERFORMANCE FUELI High flash point heavy oil use tuned pIpes ducted fan ft other heavy dty app S Performance$231 ________ 10 Performance$309 _______ lsPerforrnanceI $1200$900$876$804$720 _____$1391$1043$1018$932$835 ______$1583 $1187 $1155 $1080 $980 RED MAX PATTERN FUEL Proven best fuel pattern engines using pumps tuned pIpes 5 Pattern$1195$ 895 $ 870 $ 795 $695 10 Pattern$1375$1035 $1009 $ 926 $825 l5Pattern$1576 $1175 $1145 $1050 $940 SUPER TIGER 3000 FUEL Beat fuel Super Tiger 2000-4000 engines _____Superliger3000$1288$965$939$862$772 $225 ________ $299 _________ *375 ________ Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs Secret gredients keep engine last ing longer 18 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD sdd $2 per cartonl Personal checks may held until cleared RED MAX FUEL Continued page 20 RED MAX DIESEL FUEL Superior diseal back list popular demand customers Ball Bearings $1767 $1328 $1290 $1164 $1080 DiinelPlakBeaings$l867 $1426 $1390 $1294 $1180 running _____ power fully other 100% money back guaran tee com pletely sat isfied reason Red Max has _____ more power better idle better wear char acteristics _____ other fuel $268 ______ Grand Total SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid$1288 $965 $939 $862 $772*284 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call prica Mm gallon boatscarshellcopters-speed-pattern-scaie-/u scale-kavsn-Ignitionst3000 PLEASE PRINT CITY STATE ZIP Quite few airplanes field espe cially ARFs use tried-and-true method securing wing fuselage rubberbands Two questions arise rub berbands use plane what after done tivine mans Dont look specific number Rubberbands vary too much elastic ity size strength number rieht Put several side crossed straight equally OK attempt pull leading edge away fuselage saddle ou can reasonable ease need rubberbands Put what think enough add tso wife kids grandma three eirlfriend mistress can also add two Aunt Matilda happen like Posttlight disposition done fly ing day best thing rub berbands remove airplane pick up ground throw away absolutel insist keeping take home squirt little dish soap hands thoroughl massage soap rubberbands next step rinse completely lay out paper towel dry Use second time THROW THEM AWAY Dont use twice hot sunny da throw away after use sun deteriorates rubber very quickly im going add tip own rubberband users Dont forget reinforce trailing otritued ott page 22 vYing pan 01 Engine 90 2Cyc Wing Area 1100 sq 1218 4cyc Mac hine Cut Wood Kit including wire landing gear & wing jaining hdwe VISA & MC accepted $120 Add 500 past & handling Add 300 far COD Ohia residents add 60% tax Far free Cata lag send SASE ta Air Flair1-513-878-7487 PO Box 2075 Pairbarn Ohia 45324 20 Model Aviation due use insufficient number deterior turn printer airfoil plotter sith.. ated rubberbands hold wing thought would good idea reproduce article FOILED AGAIN! lllI PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEETED WINGS ENTER DATA EASILY VLA iNTELLIGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION o INCLUDES I8PAGE ILLUSTRATED USER MANUAL $3995d Rq.' tOMPC T AT mbk cofl ,pen & pw SO Ae Odoo o~f25oJ5doAo 50~i 0000*0 '0 000000 CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 ~N\ \ORIGINALS/ A-i Husky Christen Industries represents rebirth classic Super Cub Byron Originals brings Husky complete scale components features totally unlike anything currently available Cub kits-features like detailed handlayed fiberglass fuselage cowl conventional wire cut wings operational cabin door scale single slot flap hinges scale strut anchors Easy gentle Cub-style flying natural Byron Husky ll-flap take offs 15 20 feet plus aerobatic prowess expected Byron kit youre looking traditional Cub flying flair excitement Byron Originals can bring end search Byron A-i Husky detailed Info-Pack send $200 Catalogs just $300 See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels edge wing root rubberbands pass over doesnt take long rubberbands chew up balsa trailing edge especially catch wing tip hard landing Contact lens warning True false Although didnt see apparently May 1989 issue AMA National Newsletter contained warn ing contact lens users received copy same warning over five years ago after checking out found based ac tual incidents facts What warning stated contact lenses can become fused cornea eye wearer looks electri cal arc eg welding arc John Worth recently forwarded copy letter received subject Vin cent King OD PhD Dr King Professor Optometry Ferris State University Op tometry Big Rapids MI has PhD Vi sual Science also 30-year veteran con tact lens wear has builder/basher model airplanes few years longer letter stated no basis injury eye wear ing contact lens caused exposure electri cal arc fact contact lens will absorb very small amount radiation will therefore provide some slight really inconsequential de gree protection energy radiating spark person wearing contact lenses no greater risk eye injury radiation source person wearing contact lens es found interesting newspaper clipping similarly debunking contact lens warning several attached Dr Kings Continued page 146 22 Model Aviation SPECIFICATIONS Wing Span 105Channels S Length 67WWeight 1920 lbs Power Super Tigre 2500 & 3000OS 240 Quadra 35/40 EquIvalent Engines aqp/Made Amerkzo CAJ JWith American Technology YMODEL EtlNESa BLUES CA getting down get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 TestorlMcCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Cott erte free information RJL Industries PO Box 5 - Sierra Mad-e CA 91024 818 359-0016 ETPQY SAFE oxv unique two-component epoxy laminating system developed offer user satest highest quality laminating resin available 1 Pt Kit- $1800 t- $2600 Glass Cloth 58 oz/sq yd 38x6ft-$90038xlSft-$1900 38 x 30 ft $3500 add $300 Ship & Hand above items Send SASE additional information AcPs Ughtweight composite Materials Order COD Send check Money Order AEROSPACE COMPOSITE PRODUCTS P0 Box 16621 Dept Irvine CA 92714 Source Lightweight Materials PRECISION MODEL PRODUCTS uzZZ7Is# Made U S BARSTOCK ALUMINUM SPINNERS Pan No Size TT-150-B .. 1-1/2 TT-175-B . 1-3/4 TT-200-B 11-225-B .. 21/4 11-226-B .. 2-1/4 FAI . TT-250-B . 2-1/2 TT-251-B . 2-1/2 FAI .. TT-275-B 3/4 TT-276-8 .. 2-3/4 FAI .. 11-300-B 11-301-BPAl TT-325-B . 3-1/4 TT-350-B /2 TT-375-B .. 3-3/4 11-400-B 4 RetailApprox PriceWeight $1395058 02 149509502 159510002 169516002 189515002 189519002 209517002 229522002 249520002 269526002 289525002 369534002 499547002 599552002 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add 5300 Per Spinner PROP NUT ADAPTORS Part No Size TT-140-A . 1/4-28 TT-147-A 4-28/7mm . TT-610-A 10mm TT-710-A 10mm TT-516-A '5/16-24 TT-518-A .. 5/16-24/8mm IT-BiD-A x 10mm TT-825-A . 8x 125mm TT-375-A3/8-24 TT-125-A x 125mm Retail Approx Price Weight $495 061 02 49506102 49506302 49508202 495 602 49507602 495076oz 495 .. 075 02 595 117 02 595 02 3 Pieces Nut Washer anti Machined Bushing Add S350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 other 357th alumnus Chuck Yeager alive well TV again again think single-seat Dornier-335 Air Space Museum Washington DCpossibly same wife Helen beginning push 70 pretty hard both still ac tive licensed pilots have dabbling RC several years am enclosing picture freehand scratch-builts little 50 Saito powered 514-pounderreferred Round big 13-lb 8footer named Mr Big Its powered Zenoah 23 Both fly very well Harvey Mace Ft Bragg CA Safety/Preston Continued page 22 letter stated story apparently first sur faced 1967 So happen prefer assem bling models components arc welding rather gluing also weareontact lenses dont alarmed saw warning National Newsletter Its just true Have another safe Fly Baby/Mathews Continued page 33 site Test range free surface movement deflections per plans engine carbure tor needle settings engine-on radio op eration Finally important make sure model balances slightly ward center-of-gravity shown plans Add ballast needed Dont fly model tail-heavy everything checks out OK Fly Baby ready big try field head wind add little right rudder advance throttle youre air borne 12 ft adding up elevator youre taking off downwind Remember climb rate func tion engine speed elevator Dont horse airplane around heavy-handedly gentle caresses thats needed Take model up bit throttle down dead slow Still isnt sinking much Find little thermal shut engine off Now isnt something kind flying too sedate taste try some slow-speed touch-andbumps Hows easy Did ever prettier Whatever style flying youll find Old-Timer will oblige Versatile brisk smooth responsive Fly Baby will exactly what want See yourself isnt up date Old-Timer could ask dB Facts/Abbott Continued page 35 erates Quiet whisper 20 dB Conversation 65 dB Loud orchestra 80 dB Start danger 90 dB Amplified rock band 110 dB Threshold pain 130 dB Federal agencies have established recom mended standards safe noise exposure eight hours per day 90 dB two hours per day 100 dB less one-quarter hour per day 115 dB Lets reexamine AMA FAI cri teria Current AMA90 dB 9 ft Old FAIl00 dB meter Current FAI98 dB three meters order compare recommenda tions need convert single distancein case 9 ft Thats easy enough involves converting meters feet meter ft applying inverse square law discussed above results Current AMA90 dB 9 ft Old FAI912 dB 9 ft Current FAI988 dB 9 ft As can see new FAI regulation considerably less stringent old 146 Model Aviation Matched Performance System TOP PERFORMANCE K&B ENGINES AirplaneManse K&B FUELS K&B Glow PLUGS 9 Blends4 Choices Free Flight Kits Supplies Rubber er Power Kits Scale Old Timer Too Co Electric Motors Rubber Tissue Cox Parts Rubber Accessories Winding Hooks Timers Nitrate Dope CATALOGUE $200 CAMPBELLS CUSTOM KITS PO BOX 5996 LAKE WORTH FL 33466-5996 Letters Editor Continued page 12 V
Edition: Model Aviation - 1989/10
Page Numbers: 14, 16, 18, 20, 22, 146
John Preston Safety12 Comes Pint Northamptom St NW Wasbinpo DC 20015 colunm provided addms Items concern mgardhw safety aspects model aviation acdvldes Contet die column however die opinion author does necusaflyimpumsent official position die Academy Model Aeronautics prop hand woh. Keep RC transmitter long use wing rubberbands Con tact lens safety fable MORE fingers-in-the-prop guess some truth proverb never rains pours Last months column began finger-in-the-prop incident stated first heard quite some time Just week after mailed column Model Aviation s editorial offices received letter Texan modeler Robert McMullen re lated MA Associate Editor Ross McMullen included color photograph right hand black-and-white copy photo should see color appearing column shows extent injuries resulted what appear about nine swipes propeller Ill let Bobs letter tell hap pened inside right thumb three palm right hand 10 x 6 glass-reinforced plastic prop turned good 40 two-stroke Im thankful following rule fly alone friend drove emergency room spent some 2 hours having 59 stitches put close wounds could 68-year-old man 40 years modeling experience let thing like happen Believe have given matter lot thought following excuse merely best explanation have able come up First plug clip old McDaniel NiStarter worn held glow plug no problem Telemaster 40 tricycle gear holding down engine also held plane true Foxbat its side-mounted engine system held Ni-Starter against glow plug palm left hand gripping entire engine thumb index finger restrain plane worked fine under normal conditions things tend change normal Second small factor believe con tributed accident gear pushed back slightly some rough land ings plane did sit firm taildown stance should have Third problem starting engine ap parently due glow plug would start just bump Sullivan starter would die Ni-Starter removed second glow plug no better put new starting upright-mounted engine just automatic note position throttle However case side-mounted engine apparently effort keep engine running opened throt tle beyond its normal starting setting Also several starts heated engine really comfortable grip held NiStarter place What happened next happened quickly just seems blur think about held NiStarter place hit spinner starter engine roared plane lurched dropped starter grabbed fuselage just behind wing sickening thud engine died knew hurt dly reflex pain con scious action gripped right hand t fist Evidently luck kept bleeding minimum pain told both thumb palm cut didnt know multiple cuts until doctor opened hand emergency room amazed little damage done tendons Continued page 16 pilot error no doubt about summer 1948 bought first model aircraft engine Atwood 60 came factory equipped glow plug first safety rule learned KEEP YOUR FINGERS AND HAND AWAY FROM THE PROP June 1 1989 brief instant failed obey rule result six chops across Score Propeller 9 human 0 Robert McMul len tells us happened him months Safety column moments care lessness eradicated record over 40 years caution Dont let happen \ . ON TOO MANY 14 Model Aviation 1~ U2BA$ Celebrating 10 years producing largest selection giant scale kits available today Design building integrity scale fidelity scale flight characteristics standard IKON NWST 22 kits choose STINSON SR8 1/5 SCALE 100 $37500 NEW VHS-4HOUR FORMAT \r~Y tape youve Ki waiting finally here! youre new hobby just want learn secret wood plane construction tor YOU PLANE VIDEO Presents BUILOINC IT RIC11T THF IRT TIUF FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON Radio installation o Straight wing building o Installing hinges 0 Shear webbing Applying PO cloth o Servo installation o Setting up new radio Built-up tail surfaces o Slab tail surfaces o Aileron installation 0 Fuel tank installation o New engine setup o Fuselage construction OBUILDING STRAIGHT o Installing pushrods o covering film o Eliminating warps o Aligning Balancing o Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have 17S40 MasterCard VISA ready call OR mail $24g5 S & H TO /PLANE VIDEO MasterCardP0 Box 2312B Des Moines IA 50322 Iowa residents add 4% sales tax 18003838251 telephone consultation orthopedist determined no tendon repair indicated will have limited use right thumb two months am also sure scar tissue will re strict use thumb permanently re ally could have much worse have gone over thing mind thousand times am now convinced lacked about T H-A-A-A-T much clearing prop first cut small across center swirl makes thumbprint evident pitch prop pulled deeper hand lick until resistance stopped en gine Writing has difficult First about much dare thumb embarrassment confessing such careless stupid mistake am doing thought mind may prevent similar accident happening other modeler never believed could hap pen mebut did Im glad Bob mentioned follow ing rule fly alone acci dent occurred Whenever Ive mentioned past columns Ive received critical letters some readers continue believe typ ical model airplane accident model will strike another person Therefore fly alone obviously sure way avoid such accident dont have statisti cally valid data back up would venture say typical model-airplane-related injury may require emergency room treatment self-inflicted other words own worst enemy comes safety flying field Ive said before Ill say again Never Fly Alone Continued page 18 old timer perfectly proportioned modeling Curtiss Robin 049 EngInes -channel A/C 41 Wingspan Electric Power OptIonal $22i5 v, viva Very few lull scale airorah ore ideally nuited model flight appealing aid curtis Rabin born iv spruce linen age beautifully pmportioned rubber electric glow engines Easy fan build trainer-like iv performance Flyhee Models Calalog 506 Pfovv 7031 2739593 FLYLINE MODELS INC USA Great American Hobbles ENGINES PLANES RADIOS ACCESSORIES FUEL COD-VISA/MC 1800-542-1199 INFO 615868-8213 PO Box 4508 Nashville Tennessee 37216 2-6 pm Central Time Mon thru FrI Closed Sat Sun 16 Model Aviation 1/4 SCALE 96 $19750 tIOA AA EDO FLOATS 1/4 SCALE 46 SPERRY MESSENGER 1/4 SCALE 50 $16550 ruat v Transmitter On/Off switches couple weeks ago helping judge Scale contest bumped Bill Musser flies Howard County RC club Maryland models usually have two engines Bill related re cent incident experienced involved new programmable radio just pur chased Since have no experience pro grammable radios dont know whether like Bill purchased receiver loses transmitter signal centers servos least thats way comes factory unless reprogram something else Anyway Bill fired up twin 40s scratch-built model proceeded make some engine idle adjustments doing transmitter neck strap became entangled On/Off switch before time react flipped switch Off position servos immediately centered themselves including throttle servo youve ever experi enced thrust two 40s half throttle will know few seconds Bill hands full Fortunately managed get things back under control model getting away him moral story re program programmable radio soon buy throttle servo moves fully closed position upon loss transmitter sig nal Another incident involving transmitter being inadvertently turned off reported Bob Bingaman Sunbury PA Bob pur chased new Airtronics radio control Flying Quaker model Bob finally got around building after thinking about some 50 years Following Bobs own words describe what happened chose Airtronics Vanguard FM sixchannel radio because meets 1991 RC equip ment specifications operation 20 kHz fre quency spacing didnt want lose Quaker interference other modelers Quaker flew beautifully Vanguard radio worked flawlessly However flight using throttle trim lever control engine slow flyby altitude about 100 ft Sud denly Quaker made sharp left turn its nose down dove ground No matter hard tried could get out its dive landed about 50 ft flight line happy did hit other fliers As Quaker lay ground thought might just well turn off transmitter surprise did have turn off al ready offi guessed using throttle trim lever inadvertently turned off transmitters power switch No transmitter no matter good will send out signal power switch Off position Bob believes transmitter should have equipped guard around power switch prevent its inadvertent operation memory correct seem remember about 10 years ago some transmitters equipped flipup cover over power switch Maybe RC transmitters should have On/Off switches located somewhere other front panel Any readers wish comment Rubberbands An article Transmitter newsletter Belleville RC Fliers concerning rubberbands recently caught eye didnt have credit Im assuming written editor Darwin Evelsizer Since Ive wit nessed demise number model airplanes OTYFUELiGAL 4GAL24GALSOGAL12BGsI 54 GAL TOTALS ordered MIXTUREI DRUMAMT RED MAX PREMIUM FUELII fuel beginners ft sport flyers should use Avell synthetIc castor blend RED MAX 0$999$749$729$689$599$150 RED MAX5$1152$864$841$772$691$212 RED MAX 10$1288$965$939$862$772$286 _______ RED MAX 12$1372$1029$1002$919$823$301 _______ RED MAX15$1458$1094$1065$977$875$336 _______ RED MAX RACING FUEL Trophy winner planes boets ft cars two boat blends castor ok up 40% nlcro RED MAX2O$1775$1332$1296$1190$1066$464 RED MAX25$1965$1474$1435*1317$1179$641 RED MAX4O$2539$1905$1894$1701$1524$774 RED MAX 50$2922$2192$2133$1988$1753$929 RED MAX 80$3305$2479$2413$2214$1983$1084 RED MAX 86$3497$2622$2562$2343$2088$1162 RED MAX 4-CYCLE FUEL Eliminates detonatIon ft kickback 4-cycle enginas smoother Idle ft mon power 104 CYCLE$1363 $1022 $995 $913 $818$296 154 CYCLE$1555 $1186 $1135 $1042 $933$375 RED MAX HELICOPTER FUELI Einremely smooth running extre defoamer drk color specIal heavy oil halicptrs lOHelcopte$1391 *1043 $1016 $932 8835$309 iSHeScoprer$1583 $1187 $1188 $1080 $880$386 RED MAX PERFORMANCE FUELI High flash point heavy oil use tuned pIpes ducted fan ft other heavy dty app S Performance$231 ________ 10 Performance$309 _______ lsPerforrnanceI $1200$900$876$804$720 _____$1391$1043$1018$932$835 ______$1583 $1187 $1155 $1080 $980 RED MAX PATTERN FUEL Proven best fuel pattern engines using pumps tuned pIpes 5 Pattern$1195$ 895 $ 870 $ 795 $695 10 Pattern$1375$1035 $1009 $ 926 $825 l5Pattern$1576 $1175 $1145 $1050 $940 SUPER TIGER 3000 FUEL Beat fuel Super Tiger 2000-4000 engines _____Superliger3000$1288$965$939$862$772 $225 ________ $299 _________ *375 ________ Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs Secret gredients keep engine last ing longer 18 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD sdd $2 per cartonl Personal checks may held until cleared RED MAX FUEL Continued page 20 RED MAX DIESEL FUEL Superior diseal back list popular demand customers Ball Bearings $1767 $1328 $1290 $1164 $1080 DiinelPlakBeaings$l867 $1426 $1390 $1294 $1180 running _____ power fully other 100% money back guaran tee com pletely sat isfied reason Red Max has _____ more power better idle better wear char acteristics _____ other fuel $268 ______ Grand Total SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid$1288 $965 $939 $862 $772*284 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call prica Mm gallon boatscarshellcopters-speed-pattern-scaie-/u scale-kavsn-Ignitionst3000 PLEASE PRINT CITY STATE ZIP Quite few airplanes field espe cially ARFs use tried-and-true method securing wing fuselage rubberbands Two questions arise rub berbands use plane what after done tivine mans Dont look specific number Rubberbands vary too much elastic ity size strength number rieht Put several side crossed straight equally OK attempt pull leading edge away fuselage saddle ou can reasonable ease need rubberbands Put what think enough add tso wife kids grandma three eirlfriend mistress can also add two Aunt Matilda happen like Posttlight disposition done fly ing day best thing rub berbands remove airplane pick up ground throw away absolutel insist keeping take home squirt little dish soap hands thoroughl massage soap rubberbands next step rinse completely lay out paper towel dry Use second time THROW THEM AWAY Dont use twice hot sunny da throw away after use sun deteriorates rubber very quickly im going add tip own rubberband users Dont forget reinforce trailing otritued ott page 22 vYing pan 01 Engine 90 2Cyc Wing Area 1100 sq 1218 4cyc Mac hine Cut Wood Kit including wire landing gear & wing jaining hdwe VISA & MC accepted $120 Add 500 past & handling Add 300 far COD Ohia residents add 60% tax Far free Cata lag send SASE ta Air Flair1-513-878-7487 PO Box 2075 Pairbarn Ohia 45324 20 Model Aviation due use insufficient number deterior turn printer airfoil plotter sith.. ated rubberbands hold wing thought would good idea reproduce article FOILED AGAIN! lllI PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEETED WINGS ENTER DATA EASILY VLA iNTELLIGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION o INCLUDES I8PAGE ILLUSTRATED USER MANUAL $3995d Rq.' tOMPC T AT mbk cofl ,pen & pw SO Ae Odoo o~f25oJ5doAo 50~i 0000*0 '0 000000 CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 ~N\ \ORIGINALS/ A-i Husky Christen Industries represents rebirth classic Super Cub Byron Originals brings Husky complete scale components features totally unlike anything currently available Cub kits-features like detailed handlayed fiberglass fuselage cowl conventional wire cut wings operational cabin door scale single slot flap hinges scale strut anchors Easy gentle Cub-style flying natural Byron Husky ll-flap take offs 15 20 feet plus aerobatic prowess expected Byron kit youre looking traditional Cub flying flair excitement Byron Originals can bring end search Byron A-i Husky detailed Info-Pack send $200 Catalogs just $300 See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels edge wing root rubberbands pass over doesnt take long rubberbands chew up balsa trailing edge especially catch wing tip hard landing Contact lens warning True false Although didnt see apparently May 1989 issue AMA National Newsletter contained warn ing contact lens users received copy same warning over five years ago after checking out found based ac tual incidents facts What warning stated contact lenses can become fused cornea eye wearer looks electri cal arc eg welding arc John Worth recently forwarded copy letter received subject Vin cent King OD PhD Dr King Professor Optometry Ferris State University Op tometry Big Rapids MI has PhD Vi sual Science also 30-year veteran con tact lens wear has builder/basher model airplanes few years longer letter stated no basis injury eye wear ing contact lens caused exposure electri cal arc fact contact lens will absorb very small amount radiation will therefore provide some slight really inconsequential de gree protection energy radiating spark person wearing contact lenses no greater risk eye injury radiation source person wearing contact lens es found interesting newspaper clipping similarly debunking contact lens warning several attached Dr Kings Continued page 146 22 Model Aviation SPECIFICATIONS Wing Span 105Channels S Length 67WWeight 1920 lbs Power Super Tigre 2500 & 3000OS 240 Quadra 35/40 EquIvalent Engines aqp/Made Amerkzo CAJ JWith American Technology YMODEL EtlNESa BLUES CA getting down get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 TestorlMcCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Cott erte free information RJL Industries PO Box 5 - Sierra Mad-e CA 91024 818 359-0016 ETPQY SAFE oxv unique two-component epoxy laminating system developed offer user satest highest quality laminating resin available 1 Pt Kit- $1800 t- $2600 Glass Cloth 58 oz/sq yd 38x6ft-$90038xlSft-$1900 38 x 30 ft $3500 add $300 Ship & Hand above items Send SASE additional information AcPs Ughtweight composite Materials Order COD Send check Money Order AEROSPACE COMPOSITE PRODUCTS P0 Box 16621 Dept Irvine CA 92714 Source Lightweight Materials PRECISION MODEL PRODUCTS uzZZ7Is# Made U S BARSTOCK ALUMINUM SPINNERS Pan No Size TT-150-B .. 1-1/2 TT-175-B . 1-3/4 TT-200-B 11-225-B .. 21/4 11-226-B .. 2-1/4 FAI . TT-250-B . 2-1/2 TT-251-B . 2-1/2 FAI .. TT-275-B 3/4 TT-276-8 .. 2-3/4 FAI .. 11-300-B 11-301-BPAl TT-325-B . 3-1/4 TT-350-B /2 TT-375-B .. 3-3/4 11-400-B 4 RetailApprox PriceWeight $1395058 02 149509502 159510002 169516002 189515002 189519002 209517002 229522002 249520002 269526002 289525002 369534002 499547002 599552002 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add 5300 Per Spinner PROP NUT ADAPTORS Part No Size TT-140-A . 1/4-28 TT-147-A 4-28/7mm . TT-610-A 10mm TT-710-A 10mm TT-516-A '5/16-24 TT-518-A .. 5/16-24/8mm IT-BiD-A x 10mm TT-825-A . 8x 125mm TT-375-A3/8-24 TT-125-A x 125mm Retail Approx Price Weight $495 061 02 49506102 49506302 49508202 495 602 49507602 495076oz 495 .. 075 02 595 117 02 595 02 3 Pieces Nut Washer anti Machined Bushing Add S350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 other 357th alumnus Chuck Yeager alive well TV again again think single-seat Dornier-335 Air Space Museum Washington DCpossibly same wife Helen beginning push 70 pretty hard both still ac tive licensed pilots have dabbling RC several years am enclosing picture freehand scratch-builts little 50 Saito powered 514-pounderreferred Round big 13-lb 8footer named Mr Big Its powered Zenoah 23 Both fly very well Harvey Mace Ft Bragg CA Safety/Preston Continued page 22 letter stated story apparently first sur faced 1967 So happen prefer assem bling models components arc welding rather gluing also weareontact lenses dont alarmed saw warning National Newsletter Its just true Have another safe Fly Baby/Mathews Continued page 33 site Test range free surface movement deflections per plans engine carbure tor needle settings engine-on radio op eration Finally important make sure model balances slightly ward center-of-gravity shown plans Add ballast needed Dont fly model tail-heavy everything checks out OK Fly Baby ready big try field head wind add little right rudder advance throttle youre air borne 12 ft adding up elevator youre taking off downwind Remember climb rate func tion engine speed elevator Dont horse airplane around heavy-handedly gentle caresses thats needed Take model up bit throttle down dead slow Still isnt sinking much Find little thermal shut engine off Now isnt something kind flying too sedate taste try some slow-speed touch-andbumps Hows easy Did ever prettier Whatever style flying youll find Old-Timer will oblige Versatile brisk smooth responsive Fly Baby will exactly what want See yourself isnt up date Old-Timer could ask dB Facts/Abbott Continued page 35 erates Quiet whisper 20 dB Conversation 65 dB Loud orchestra 80 dB Start danger 90 dB Amplified rock band 110 dB Threshold pain 130 dB Federal agencies have established recom mended standards safe noise exposure eight hours per day 90 dB two hours per day 100 dB less one-quarter hour per day 115 dB Lets reexamine AMA FAI cri teria Current AMA90 dB 9 ft Old FAIl00 dB meter Current FAI98 dB three meters order compare recommenda tions need convert single distancein case 9 ft Thats easy enough involves converting meters feet meter ft applying inverse square law discussed above results Current AMA90 dB 9 ft Old FAI912 dB 9 ft Current FAI988 dB 9 ft As can see new FAI regulation considerably less stringent old 146 Model Aviation Matched Performance System TOP PERFORMANCE K&B ENGINES AirplaneManse K&B FUELS K&B Glow PLUGS 9 Blends4 Choices Free Flight Kits Supplies Rubber er Power Kits Scale Old Timer Too Co Electric Motors Rubber Tissue Cox Parts Rubber Accessories Winding Hooks Timers Nitrate Dope CATALOGUE $200 CAMPBELLS CUSTOM KITS PO BOX 5996 LAKE WORTH FL 33466-5996 Letters Editor Continued page 12 V
Edition: Model Aviation - 1989/10
Page Numbers: 14, 16, 18, 20, 22, 146
John Preston Safety12 Comes Pint Northamptom St NW Wasbinpo DC 20015 colunm provided addms Items concern mgardhw safety aspects model aviation acdvldes Contet die column however die opinion author does necusaflyimpumsent official position die Academy Model Aeronautics prop hand woh. Keep RC transmitter long use wing rubberbands Con tact lens safety fable MORE fingers-in-the-prop guess some truth proverb never rains pours Last months column began finger-in-the-prop incident stated first heard quite some time Just week after mailed column Model Aviation s editorial offices received letter Texan modeler Robert McMullen re lated MA Associate Editor Ross McMullen included color photograph right hand black-and-white copy photo should see color appearing column shows extent injuries resulted what appear about nine swipes propeller Ill let Bobs letter tell hap pened inside right thumb three palm right hand 10 x 6 glass-reinforced plastic prop turned good 40 two-stroke Im thankful following rule fly alone friend drove emergency room spent some 2 hours having 59 stitches put close wounds could 68-year-old man 40 years modeling experience let thing like happen Believe have given matter lot thought following excuse merely best explanation have able come up First plug clip old McDaniel NiStarter worn held glow plug no problem Telemaster 40 tricycle gear holding down engine also held plane true Foxbat its side-mounted engine system held Ni-Starter against glow plug palm left hand gripping entire engine thumb index finger restrain plane worked fine under normal conditions things tend change normal Second small factor believe con tributed accident gear pushed back slightly some rough land ings plane did sit firm taildown stance should have Third problem starting engine ap parently due glow plug would start just bump Sullivan starter would die Ni-Starter removed second glow plug no better put new starting upright-mounted engine just automatic note position throttle However case side-mounted engine apparently effort keep engine running opened throt tle beyond its normal starting setting Also several starts heated engine really comfortable grip held NiStarter place What happened next happened quickly just seems blur think about held NiStarter place hit spinner starter engine roared plane lurched dropped starter grabbed fuselage just behind wing sickening thud engine died knew hurt dly reflex pain con scious action gripped right hand t fist Evidently luck kept bleeding minimum pain told both thumb palm cut didnt know multiple cuts until doctor opened hand emergency room amazed little damage done tendons Continued page 16 pilot error no doubt about summer 1948 bought first model aircraft engine Atwood 60 came factory equipped glow plug first safety rule learned KEEP YOUR FINGERS AND HAND AWAY FROM THE PROP June 1 1989 brief instant failed obey rule result six chops across Score Propeller 9 human 0 Robert McMul len tells us happened him months Safety column moments care lessness eradicated record over 40 years caution Dont let happen \ . ON TOO MANY 14 Model Aviation 1~ U2BA$ Celebrating 10 years producing largest selection giant scale kits available today Design building integrity scale fidelity scale flight characteristics standard IKON NWST 22 kits choose STINSON SR8 1/5 SCALE 100 $37500 NEW VHS-4HOUR FORMAT \r~Y tape youve Ki waiting finally here! youre new hobby just want learn secret wood plane construction tor YOU PLANE VIDEO Presents BUILOINC IT RIC11T THF IRT TIUF FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON Radio installation o Straight wing building o Installing hinges 0 Shear webbing Applying PO cloth o Servo installation o Setting up new radio Built-up tail surfaces o Slab tail surfaces o Aileron installation 0 Fuel tank installation o New engine setup o Fuselage construction OBUILDING STRAIGHT o Installing pushrods o covering film o Eliminating warps o Aligning Balancing o Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have 17S40 MasterCard VISA ready call OR mail $24g5 S & H TO /PLANE VIDEO MasterCardP0 Box 2312B Des Moines IA 50322 Iowa residents add 4% sales tax 18003838251 telephone consultation orthopedist determined no tendon repair indicated will have limited use right thumb two months am also sure scar tissue will re strict use thumb permanently re ally could have much worse have gone over thing mind thousand times am now convinced lacked about T H-A-A-A-T much clearing prop first cut small across center swirl makes thumbprint evident pitch prop pulled deeper hand lick until resistance stopped en gine Writing has difficult First about much dare thumb embarrassment confessing such careless stupid mistake am doing thought mind may prevent similar accident happening other modeler never believed could hap pen mebut did Im glad Bob mentioned follow ing rule fly alone acci dent occurred Whenever Ive mentioned past columns Ive received critical letters some readers continue believe typ ical model airplane accident model will strike another person Therefore fly alone obviously sure way avoid such accident dont have statisti cally valid data back up would venture say typical model-airplane-related injury may require emergency room treatment self-inflicted other words own worst enemy comes safety flying field Ive said before Ill say again Never Fly Alone Continued page 18 old timer perfectly proportioned modeling Curtiss Robin 049 EngInes -channel A/C 41 Wingspan Electric Power OptIonal $22i5 v, viva Very few lull scale airorah ore ideally nuited model flight appealing aid curtis Rabin born iv spruce linen age beautifully pmportioned rubber electric glow engines Easy fan build trainer-like iv performance Flyhee Models Calalog 506 Pfovv 7031 2739593 FLYLINE MODELS INC USA Great American Hobbles ENGINES PLANES RADIOS ACCESSORIES FUEL COD-VISA/MC 1800-542-1199 INFO 615868-8213 PO Box 4508 Nashville Tennessee 37216 2-6 pm Central Time Mon thru FrI Closed Sat Sun 16 Model Aviation 1/4 SCALE 96 $19750 tIOA AA EDO FLOATS 1/4 SCALE 46 SPERRY MESSENGER 1/4 SCALE 50 $16550 ruat v Transmitter On/Off switches couple weeks ago helping judge Scale contest bumped Bill Musser flies Howard County RC club Maryland models usually have two engines Bill related re cent incident experienced involved new programmable radio just pur chased Since have no experience pro grammable radios dont know whether like Bill purchased receiver loses transmitter signal centers servos least thats way comes factory unless reprogram something else Anyway Bill fired up twin 40s scratch-built model proceeded make some engine idle adjustments doing transmitter neck strap became entangled On/Off switch before time react flipped switch Off position servos immediately centered themselves including throttle servo youve ever experi enced thrust two 40s half throttle will know few seconds Bill hands full Fortunately managed get things back under control model getting away him moral story re program programmable radio soon buy throttle servo moves fully closed position upon loss transmitter sig nal Another incident involving transmitter being inadvertently turned off reported Bob Bingaman Sunbury PA Bob pur chased new Airtronics radio control Flying Quaker model Bob finally got around building after thinking about some 50 years Following Bobs own words describe what happened chose Airtronics Vanguard FM sixchannel radio because meets 1991 RC equip ment specifications operation 20 kHz fre quency spacing didnt want lose Quaker interference other modelers Quaker flew beautifully Vanguard radio worked flawlessly However flight using throttle trim lever control engine slow flyby altitude about 100 ft Sud denly Quaker made sharp left turn its nose down dove ground No matter hard tried could get out its dive landed about 50 ft flight line happy did hit other fliers As Quaker lay ground thought might just well turn off transmitter surprise did have turn off al ready offi guessed using throttle trim lever inadvertently turned off transmitters power switch No transmitter no matter good will send out signal power switch Off position Bob believes transmitter should have equipped guard around power switch prevent its inadvertent operation memory correct seem remember about 10 years ago some transmitters equipped flipup cover over power switch Maybe RC transmitters should have On/Off switches located somewhere other front panel Any readers wish comment Rubberbands An article Transmitter newsletter Belleville RC Fliers concerning rubberbands recently caught eye didnt have credit Im assuming written editor Darwin Evelsizer Since Ive wit nessed demise number model airplanes OTYFUELiGAL 4GAL24GALSOGAL12BGsI 54 GAL TOTALS ordered MIXTUREI DRUMAMT RED MAX PREMIUM FUELII fuel beginners ft sport flyers should use Avell synthetIc castor blend RED MAX 0$999$749$729$689$599$150 RED MAX5$1152$864$841$772$691$212 RED MAX 10$1288$965$939$862$772$286 _______ RED MAX 12$1372$1029$1002$919$823$301 _______ RED MAX15$1458$1094$1065$977$875$336 _______ RED MAX RACING FUEL Trophy winner planes boets ft cars two boat blends castor ok up 40% nlcro RED MAX2O$1775$1332$1296$1190$1066$464 RED MAX25$1965$1474$1435*1317$1179$641 RED MAX4O$2539$1905$1894$1701$1524$774 RED MAX 50$2922$2192$2133$1988$1753$929 RED MAX 80$3305$2479$2413$2214$1983$1084 RED MAX 86$3497$2622$2562$2343$2088$1162 RED MAX 4-CYCLE FUEL Eliminates detonatIon ft kickback 4-cycle enginas smoother Idle ft mon power 104 CYCLE$1363 $1022 $995 $913 $818$296 154 CYCLE$1555 $1186 $1135 $1042 $933$375 RED MAX HELICOPTER FUELI Einremely smooth running extre defoamer drk color specIal heavy oil halicptrs lOHelcopte$1391 *1043 $1016 $932 8835$309 iSHeScoprer$1583 $1187 $1188 $1080 $880$386 RED MAX PERFORMANCE FUELI High flash point heavy oil use tuned pIpes ducted fan ft other heavy dty app S Performance$231 ________ 10 Performance$309 _______ lsPerforrnanceI $1200$900$876$804$720 _____$1391$1043$1018$932$835 ______$1583 $1187 $1155 $1080 $980 RED MAX PATTERN FUEL Proven best fuel pattern engines using pumps tuned pIpes 5 Pattern$1195$ 895 $ 870 $ 795 $695 10 Pattern$1375$1035 $1009 $ 926 $825 l5Pattern$1576 $1175 $1145 $1050 $940 SUPER TIGER 3000 FUEL Beat fuel Super Tiger 2000-4000 engines _____Superliger3000$1288$965$939$862$772 $225 ________ $299 _________ *375 ________ Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs Secret gredients keep engine last ing longer 18 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD sdd $2 per cartonl Personal checks may held until cleared RED MAX FUEL Continued page 20 RED MAX DIESEL FUEL Superior diseal back list popular demand customers Ball Bearings $1767 $1328 $1290 $1164 $1080 DiinelPlakBeaings$l867 $1426 $1390 $1294 $1180 running _____ power fully other 100% money back guaran tee com pletely sat isfied reason Red Max has _____ more power better idle better wear char acteristics _____ other fuel $268 ______ Grand Total SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid$1288 $965 $939 $862 $772*284 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call prica Mm gallon boatscarshellcopters-speed-pattern-scaie-/u scale-kavsn-Ignitionst3000 PLEASE PRINT CITY STATE ZIP Quite few airplanes field espe cially ARFs use tried-and-true method securing wing fuselage rubberbands Two questions arise rub berbands use plane what after done tivine mans Dont look specific number Rubberbands vary too much elastic ity size strength number rieht Put several side crossed straight equally OK attempt pull leading edge away fuselage saddle ou can reasonable ease need rubberbands Put what think enough add tso wife kids grandma three eirlfriend mistress can also add two Aunt Matilda happen like Posttlight disposition done fly ing day best thing rub berbands remove airplane pick up ground throw away absolutel insist keeping take home squirt little dish soap hands thoroughl massage soap rubberbands next step rinse completely lay out paper towel dry Use second time THROW THEM AWAY Dont use twice hot sunny da throw away after use sun deteriorates rubber very quickly im going add tip own rubberband users Dont forget reinforce trailing otritued ott page 22 vYing pan 01 Engine 90 2Cyc Wing Area 1100 sq 1218 4cyc Mac hine Cut Wood Kit including wire landing gear & wing jaining hdwe VISA & MC accepted $120 Add 500 past & handling Add 300 far COD Ohia residents add 60% tax Far free Cata lag send SASE ta Air Flair1-513-878-7487 PO Box 2075 Pairbarn Ohia 45324 20 Model Aviation due use insufficient number deterior turn printer airfoil plotter sith.. ated rubberbands hold wing thought would good idea reproduce article FOILED AGAIN! lllI PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEETED WINGS ENTER DATA EASILY VLA iNTELLIGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION o INCLUDES I8PAGE ILLUSTRATED USER MANUAL $3995d Rq.' tOMPC T AT mbk cofl ,pen & pw SO Ae Odoo o~f25oJ5doAo 50~i 0000*0 '0 000000 CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 ~N\ \ORIGINALS/ A-i Husky Christen Industries represents rebirth classic Super Cub Byron Originals brings Husky complete scale components features totally unlike anything currently available Cub kits-features like detailed handlayed fiberglass fuselage cowl conventional wire cut wings operational cabin door scale single slot flap hinges scale strut anchors Easy gentle Cub-style flying natural Byron Husky ll-flap take offs 15 20 feet plus aerobatic prowess expected Byron kit youre looking traditional Cub flying flair excitement Byron Originals can bring end search Byron A-i Husky detailed Info-Pack send $200 Catalogs just $300 See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels edge wing root rubberbands pass over doesnt take long rubberbands chew up balsa trailing edge especially catch wing tip hard landing Contact lens warning True false Although didnt see apparently May 1989 issue AMA National Newsletter contained warn ing contact lens users received copy same warning over five years ago after checking out found based ac tual incidents facts What warning stated contact lenses can become fused cornea eye wearer looks electri cal arc eg welding arc John Worth recently forwarded copy letter received subject Vin cent King OD PhD Dr King Professor Optometry Ferris State University Op tometry Big Rapids MI has PhD Vi sual Science also 30-year veteran con tact lens wear has builder/basher model airplanes few years longer letter stated no basis injury eye wear ing contact lens caused exposure electri cal arc fact contact lens will absorb very small amount radiation will therefore provide some slight really inconsequential de gree protection energy radiating spark person wearing contact lenses no greater risk eye injury radiation source person wearing contact lens es found interesting newspaper clipping similarly debunking contact lens warning several attached Dr Kings Continued page 146 22 Model Aviation SPECIFICATIONS Wing Span 105Channels S Length 67WWeight 1920 lbs Power Super Tigre 2500 & 3000OS 240 Quadra 35/40 EquIvalent Engines aqp/Made Amerkzo CAJ JWith American Technology YMODEL EtlNESa BLUES CA getting down get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 TestorlMcCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Cott erte free information RJL Industries PO Box 5 - Sierra Mad-e CA 91024 818 359-0016 ETPQY SAFE oxv unique two-component epoxy laminating system developed offer user satest highest quality laminating resin available 1 Pt Kit- $1800 t- $2600 Glass Cloth 58 oz/sq yd 38x6ft-$90038xlSft-$1900 38 x 30 ft $3500 add $300 Ship & Hand above items Send SASE additional information AcPs Ughtweight composite Materials Order COD Send check Money Order AEROSPACE COMPOSITE PRODUCTS P0 Box 16621 Dept Irvine CA 92714 Source Lightweight Materials PRECISION MODEL PRODUCTS uzZZ7Is# Made U S BARSTOCK ALUMINUM SPINNERS Pan No Size TT-150-B .. 1-1/2 TT-175-B . 1-3/4 TT-200-B 11-225-B .. 21/4 11-226-B .. 2-1/4 FAI . TT-250-B . 2-1/2 TT-251-B . 2-1/2 FAI .. TT-275-B 3/4 TT-276-8 .. 2-3/4 FAI .. 11-300-B 11-301-BPAl TT-325-B . 3-1/4 TT-350-B /2 TT-375-B .. 3-3/4 11-400-B 4 RetailApprox PriceWeight $1395058 02 149509502 159510002 169516002 189515002 189519002 209517002 229522002 249520002 269526002 289525002 369534002 499547002 599552002 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add 5300 Per Spinner PROP NUT ADAPTORS Part No Size TT-140-A . 1/4-28 TT-147-A 4-28/7mm . TT-610-A 10mm TT-710-A 10mm TT-516-A '5/16-24 TT-518-A .. 5/16-24/8mm IT-BiD-A x 10mm TT-825-A . 8x 125mm TT-375-A3/8-24 TT-125-A x 125mm Retail Approx Price Weight $495 061 02 49506102 49506302 49508202 495 602 49507602 495076oz 495 .. 075 02 595 117 02 595 02 3 Pieces Nut Washer anti Machined Bushing Add S350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 other 357th alumnus Chuck Yeager alive well TV again again think single-seat Dornier-335 Air Space Museum Washington DCpossibly same wife Helen beginning push 70 pretty hard both still ac tive licensed pilots have dabbling RC several years am enclosing picture freehand scratch-builts little 50 Saito powered 514-pounderreferred Round big 13-lb 8footer named Mr Big Its powered Zenoah 23 Both fly very well Harvey Mace Ft Bragg CA Safety/Preston Continued page 22 letter stated story apparently first sur faced 1967 So happen prefer assem bling models components arc welding rather gluing also weareontact lenses dont alarmed saw warning National Newsletter Its just true Have another safe Fly Baby/Mathews Continued page 33 site Test range free surface movement deflections per plans engine carbure tor needle settings engine-on radio op eration Finally important make sure model balances slightly ward center-of-gravity shown plans Add ballast needed Dont fly model tail-heavy everything checks out OK Fly Baby ready big try field head wind add little right rudder advance throttle youre air borne 12 ft adding up elevator youre taking off downwind Remember climb rate func tion engine speed elevator Dont horse airplane around heavy-handedly gentle caresses thats needed Take model up bit throttle down dead slow Still isnt sinking much Find little thermal shut engine off Now isnt something kind flying too sedate taste try some slow-speed touch-andbumps Hows easy Did ever prettier Whatever style flying youll find Old-Timer will oblige Versatile brisk smooth responsive Fly Baby will exactly what want See yourself isnt up date Old-Timer could ask dB Facts/Abbott Continued page 35 erates Quiet whisper 20 dB Conversation 65 dB Loud orchestra 80 dB Start danger 90 dB Amplified rock band 110 dB Threshold pain 130 dB Federal agencies have established recom mended standards safe noise exposure eight hours per day 90 dB two hours per day 100 dB less one-quarter hour per day 115 dB Lets reexamine AMA FAI cri teria Current AMA90 dB 9 ft Old FAIl00 dB meter Current FAI98 dB three meters order compare recommenda tions need convert single distancein case 9 ft Thats easy enough involves converting meters feet meter ft applying inverse square law discussed above results Current AMA90 dB 9 ft Old FAI912 dB 9 ft Current FAI988 dB 9 ft As can see new FAI regulation considerably less stringent old 146 Model Aviation Matched Performance System TOP PERFORMANCE K&B ENGINES AirplaneManse K&B FUELS K&B Glow PLUGS 9 Blends4 Choices Free Flight Kits Supplies Rubber er Power Kits Scale Old Timer Too Co Electric Motors Rubber Tissue Cox Parts Rubber Accessories Winding Hooks Timers Nitrate Dope CATALOGUE $200 CAMPBELLS CUSTOM KITS PO BOX 5996 LAKE WORTH FL 33466-5996 Letters Editor Continued page 12 V
Edition: Model Aviation - 1989/10
Page Numbers: 14, 16, 18, 20, 22, 146
John Preston Safety12 Comes Pint Northamptom St NW Wasbinpo DC 20015 colunm provided addms Items concern mgardhw safety aspects model aviation acdvldes Contet die column however die opinion author does necusaflyimpumsent official position die Academy Model Aeronautics prop hand woh. Keep RC transmitter long use wing rubberbands Con tact lens safety fable MORE fingers-in-the-prop guess some truth proverb never rains pours Last months column began finger-in-the-prop incident stated first heard quite some time Just week after mailed column Model Aviation s editorial offices received letter Texan modeler Robert McMullen re lated MA Associate Editor Ross McMullen included color photograph right hand black-and-white copy photo should see color appearing column shows extent injuries resulted what appear about nine swipes propeller Ill let Bobs letter tell hap pened inside right thumb three palm right hand 10 x 6 glass-reinforced plastic prop turned good 40 two-stroke Im thankful following rule fly alone friend drove emergency room spent some 2 hours having 59 stitches put close wounds could 68-year-old man 40 years modeling experience let thing like happen Believe have given matter lot thought following excuse merely best explanation have able come up First plug clip old McDaniel NiStarter worn held glow plug no problem Telemaster 40 tricycle gear holding down engine also held plane true Foxbat its side-mounted engine system held Ni-Starter against glow plug palm left hand gripping entire engine thumb index finger restrain plane worked fine under normal conditions things tend change normal Second small factor believe con tributed accident gear pushed back slightly some rough land ings plane did sit firm taildown stance should have Third problem starting engine ap parently due glow plug would start just bump Sullivan starter would die Ni-Starter removed second glow plug no better put new starting upright-mounted engine just automatic note position throttle However case side-mounted engine apparently effort keep engine running opened throt tle beyond its normal starting setting Also several starts heated engine really comfortable grip held NiStarter place What happened next happened quickly just seems blur think about held NiStarter place hit spinner starter engine roared plane lurched dropped starter grabbed fuselage just behind wing sickening thud engine died knew hurt dly reflex pain con scious action gripped right hand t fist Evidently luck kept bleeding minimum pain told both thumb palm cut didnt know multiple cuts until doctor opened hand emergency room amazed little damage done tendons Continued page 16 pilot error no doubt about summer 1948 bought first model aircraft engine Atwood 60 came factory equipped glow plug first safety rule learned KEEP YOUR FINGERS AND HAND AWAY FROM THE PROP June 1 1989 brief instant failed obey rule result six chops across Score Propeller 9 human 0 Robert McMul len tells us happened him months Safety column moments care lessness eradicated record over 40 years caution Dont let happen \ . ON TOO MANY 14 Model Aviation 1~ U2BA$ Celebrating 10 years producing largest selection giant scale kits available today Design building integrity scale fidelity scale flight characteristics standard IKON NWST 22 kits choose STINSON SR8 1/5 SCALE 100 $37500 NEW VHS-4HOUR FORMAT \r~Y tape youve Ki waiting finally here! youre new hobby just want learn secret wood plane construction tor YOU PLANE VIDEO Presents BUILOINC IT RIC11T THF IRT TIUF FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON Radio installation o Straight wing building o Installing hinges 0 Shear webbing Applying PO cloth o Servo installation o Setting up new radio Built-up tail surfaces o Slab tail surfaces o Aileron installation 0 Fuel tank installation o New engine setup o Fuselage construction OBUILDING STRAIGHT o Installing pushrods o covering film o Eliminating warps o Aligning Balancing o Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have 17S40 MasterCard VISA ready call OR mail $24g5 S & H TO /PLANE VIDEO MasterCardP0 Box 2312B Des Moines IA 50322 Iowa residents add 4% sales tax 18003838251 telephone consultation orthopedist determined no tendon repair indicated will have limited use right thumb two months am also sure scar tissue will re strict use thumb permanently re ally could have much worse have gone over thing mind thousand times am now convinced lacked about T H-A-A-A-T much clearing prop first cut small across center swirl makes thumbprint evident pitch prop pulled deeper hand lick until resistance stopped en gine Writing has difficult First about much dare thumb embarrassment confessing such careless stupid mistake am doing thought mind may prevent similar accident happening other modeler never believed could hap pen mebut did Im glad Bob mentioned follow ing rule fly alone acci dent occurred Whenever Ive mentioned past columns Ive received critical letters some readers continue believe typ ical model airplane accident model will strike another person Therefore fly alone obviously sure way avoid such accident dont have statisti cally valid data back up would venture say typical model-airplane-related injury may require emergency room treatment self-inflicted other words own worst enemy comes safety flying field Ive said before Ill say again Never Fly Alone Continued page 18 old timer perfectly proportioned modeling Curtiss Robin 049 EngInes -channel A/C 41 Wingspan Electric Power OptIonal $22i5 v, viva Very few lull scale airorah ore ideally nuited model flight appealing aid curtis Rabin born iv spruce linen age beautifully pmportioned rubber electric glow engines Easy fan build trainer-like iv performance Flyhee Models Calalog 506 Pfovv 7031 2739593 FLYLINE MODELS INC USA Great American Hobbles ENGINES PLANES RADIOS ACCESSORIES FUEL COD-VISA/MC 1800-542-1199 INFO 615868-8213 PO Box 4508 Nashville Tennessee 37216 2-6 pm Central Time Mon thru FrI Closed Sat Sun 16 Model Aviation 1/4 SCALE 96 $19750 tIOA AA EDO FLOATS 1/4 SCALE 46 SPERRY MESSENGER 1/4 SCALE 50 $16550 ruat v Transmitter On/Off switches couple weeks ago helping judge Scale contest bumped Bill Musser flies Howard County RC club Maryland models usually have two engines Bill related re cent incident experienced involved new programmable radio just pur chased Since have no experience pro grammable radios dont know whether like Bill purchased receiver loses transmitter signal centers servos least thats way comes factory unless reprogram something else Anyway Bill fired up twin 40s scratch-built model proceeded make some engine idle adjustments doing transmitter neck strap became entangled On/Off switch before time react flipped switch Off position servos immediately centered themselves including throttle servo youve ever experi enced thrust two 40s half throttle will know few seconds Bill hands full Fortunately managed get things back under control model getting away him moral story re program programmable radio soon buy throttle servo moves fully closed position upon loss transmitter sig nal Another incident involving transmitter being inadvertently turned off reported Bob Bingaman Sunbury PA Bob pur chased new Airtronics radio control Flying Quaker model Bob finally got around building after thinking about some 50 years Following Bobs own words describe what happened chose Airtronics Vanguard FM sixchannel radio because meets 1991 RC equip ment specifications operation 20 kHz fre quency spacing didnt want lose Quaker interference other modelers Quaker flew beautifully Vanguard radio worked flawlessly However flight using throttle trim lever control engine slow flyby altitude about 100 ft Sud denly Quaker made sharp left turn its nose down dove ground No matter hard tried could get out its dive landed about 50 ft flight line happy did hit other fliers As Quaker lay ground thought might just well turn off transmitter surprise did have turn off al ready offi guessed using throttle trim lever inadvertently turned off transmitters power switch No transmitter no matter good will send out signal power switch Off position Bob believes transmitter should have equipped guard around power switch prevent its inadvertent operation memory correct seem remember about 10 years ago some transmitters equipped flipup cover over power switch Maybe RC transmitters should have On/Off switches located somewhere other front panel Any readers wish comment Rubberbands An article Transmitter newsletter Belleville RC Fliers concerning rubberbands recently caught eye didnt have credit Im assuming written editor Darwin Evelsizer Since Ive wit nessed demise number model airplanes OTYFUELiGAL 4GAL24GALSOGAL12BGsI 54 GAL TOTALS ordered MIXTUREI DRUMAMT RED MAX PREMIUM FUELII fuel beginners ft sport flyers should use Avell synthetIc castor blend RED MAX 0$999$749$729$689$599$150 RED MAX5$1152$864$841$772$691$212 RED MAX 10$1288$965$939$862$772$286 _______ RED MAX 12$1372$1029$1002$919$823$301 _______ RED MAX15$1458$1094$1065$977$875$336 _______ RED MAX RACING FUEL Trophy winner planes boets ft cars two boat blends castor ok up 40% nlcro RED MAX2O$1775$1332$1296$1190$1066$464 RED MAX25$1965$1474$1435*1317$1179$641 RED MAX4O$2539$1905$1894$1701$1524$774 RED MAX 50$2922$2192$2133$1988$1753$929 RED MAX 80$3305$2479$2413$2214$1983$1084 RED MAX 86$3497$2622$2562$2343$2088$1162 RED MAX 4-CYCLE FUEL Eliminates detonatIon ft kickback 4-cycle enginas smoother Idle ft mon power 104 CYCLE$1363 $1022 $995 $913 $818$296 154 CYCLE$1555 $1186 $1135 $1042 $933$375 RED MAX HELICOPTER FUELI Einremely smooth running extre defoamer drk color specIal heavy oil halicptrs lOHelcopte$1391 *1043 $1016 $932 8835$309 iSHeScoprer$1583 $1187 $1188 $1080 $880$386 RED MAX PERFORMANCE FUELI High flash point heavy oil use tuned pIpes ducted fan ft other heavy dty app S Performance$231 ________ 10 Performance$309 _______ lsPerforrnanceI $1200$900$876$804$720 _____$1391$1043$1018$932$835 ______$1583 $1187 $1155 $1080 $980 RED MAX PATTERN FUEL Proven best fuel pattern engines using pumps tuned pIpes 5 Pattern$1195$ 895 $ 870 $ 795 $695 10 Pattern$1375$1035 $1009 $ 926 $825 l5Pattern$1576 $1175 $1145 $1050 $940 SUPER TIGER 3000 FUEL Beat fuel Super Tiger 2000-4000 engines _____Superliger3000$1288$965$939$862$772 $225 ________ $299 _________ *375 ________ Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs Secret gredients keep engine last ing longer 18 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD sdd $2 per cartonl Personal checks may held until cleared RED MAX FUEL Continued page 20 RED MAX DIESEL FUEL Superior diseal back list popular demand customers Ball Bearings $1767 $1328 $1290 $1164 $1080 DiinelPlakBeaings$l867 $1426 $1390 $1294 $1180 running _____ power fully other 100% money back guaran tee com pletely sat isfied reason Red Max has _____ more power better idle better wear char acteristics _____ other fuel $268 ______ Grand Total SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid$1288 $965 $939 $862 $772*284 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call prica Mm gallon boatscarshellcopters-speed-pattern-scaie-/u scale-kavsn-Ignitionst3000 PLEASE PRINT CITY STATE ZIP Quite few airplanes field espe cially ARFs use tried-and-true method securing wing fuselage rubberbands Two questions arise rub berbands use plane what after done tivine mans Dont look specific number Rubberbands vary too much elastic ity size strength number rieht Put several side crossed straight equally OK attempt pull leading edge away fuselage saddle ou can reasonable ease need rubberbands Put what think enough add tso wife kids grandma three eirlfriend mistress can also add two Aunt Matilda happen like Posttlight disposition done fly ing day best thing rub berbands remove airplane pick up ground throw away absolutel insist keeping take home squirt little dish soap hands thoroughl massage soap rubberbands next step rinse completely lay out paper towel dry Use second time THROW THEM AWAY Dont use twice hot sunny da throw away after use sun deteriorates rubber very quickly im going add tip own rubberband users Dont forget reinforce trailing otritued ott page 22 vYing pan 01 Engine 90 2Cyc Wing Area 1100 sq 1218 4cyc Mac hine Cut Wood Kit including wire landing gear & wing jaining hdwe VISA & MC accepted $120 Add 500 past & handling Add 300 far COD Ohia residents add 60% tax Far free Cata lag send SASE ta Air Flair1-513-878-7487 PO Box 2075 Pairbarn Ohia 45324 20 Model Aviation due use insufficient number deterior turn printer airfoil plotter sith.. ated rubberbands hold wing thought would good idea reproduce article FOILED AGAIN! lllI PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEETED WINGS ENTER DATA EASILY VLA iNTELLIGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION o INCLUDES I8PAGE ILLUSTRATED USER MANUAL $3995d Rq.' tOMPC T AT mbk cofl ,pen & pw SO Ae Odoo o~f25oJ5doAo 50~i 0000*0 '0 000000 CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 ~N\ \ORIGINALS/ A-i Husky Christen Industries represents rebirth classic Super Cub Byron Originals brings Husky complete scale components features totally unlike anything currently available Cub kits-features like detailed handlayed fiberglass fuselage cowl conventional wire cut wings operational cabin door scale single slot flap hinges scale strut anchors Easy gentle Cub-style flying natural Byron Husky ll-flap take offs 15 20 feet plus aerobatic prowess expected Byron kit youre looking traditional Cub flying flair excitement Byron Originals can bring end search Byron A-i Husky detailed Info-Pack send $200 Catalogs just $300 See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels edge wing root rubberbands pass over doesnt take long rubberbands chew up balsa trailing edge especially catch wing tip hard landing Contact lens warning True false Although didnt see apparently May 1989 issue AMA National Newsletter contained warn ing contact lens users received copy same warning over five years ago after checking out found based ac tual incidents facts What warning stated contact lenses can become fused cornea eye wearer looks electri cal arc eg welding arc John Worth recently forwarded copy letter received subject Vin cent King OD PhD Dr King Professor Optometry Ferris State University Op tometry Big Rapids MI has PhD Vi sual Science also 30-year veteran con tact lens wear has builder/basher model airplanes few years longer letter stated no basis injury eye wear ing contact lens caused exposure electri cal arc fact contact lens will absorb very small amount radiation will therefore provide some slight really inconsequential de gree protection energy radiating spark person wearing contact lenses no greater risk eye injury radiation source person wearing contact lens es found interesting newspaper clipping similarly debunking contact lens warning several attached Dr Kings Continued page 146 22 Model Aviation SPECIFICATIONS Wing Span 105Channels S Length 67WWeight 1920 lbs Power Super Tigre 2500 & 3000OS 240 Quadra 35/40 EquIvalent Engines aqp/Made Amerkzo CAJ JWith American Technology YMODEL EtlNESa BLUES CA getting down get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 TestorlMcCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Cott erte free information RJL Industries PO Box 5 - Sierra Mad-e CA 91024 818 359-0016 ETPQY SAFE oxv unique two-component epoxy laminating system developed offer user satest highest quality laminating resin available 1 Pt Kit- $1800 t- $2600 Glass Cloth 58 oz/sq yd 38x6ft-$90038xlSft-$1900 38 x 30 ft $3500 add $300 Ship & Hand above items Send SASE additional information AcPs Ughtweight composite Materials Order COD Send check Money Order AEROSPACE COMPOSITE PRODUCTS P0 Box 16621 Dept Irvine CA 92714 Source Lightweight Materials PRECISION MODEL PRODUCTS uzZZ7Is# Made U S BARSTOCK ALUMINUM SPINNERS Pan No Size TT-150-B .. 1-1/2 TT-175-B . 1-3/4 TT-200-B 11-225-B .. 21/4 11-226-B .. 2-1/4 FAI . TT-250-B . 2-1/2 TT-251-B . 2-1/2 FAI .. TT-275-B 3/4 TT-276-8 .. 2-3/4 FAI .. 11-300-B 11-301-BPAl TT-325-B . 3-1/4 TT-350-B /2 TT-375-B .. 3-3/4 11-400-B 4 RetailApprox PriceWeight $1395058 02 149509502 159510002 169516002 189515002 189519002 209517002 229522002 249520002 269526002 289525002 369534002 499547002 599552002 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add 5300 Per Spinner PROP NUT ADAPTORS Part No Size TT-140-A . 1/4-28 TT-147-A 4-28/7mm . TT-610-A 10mm TT-710-A 10mm TT-516-A '5/16-24 TT-518-A .. 5/16-24/8mm IT-BiD-A x 10mm TT-825-A . 8x 125mm TT-375-A3/8-24 TT-125-A x 125mm Retail Approx Price Weight $495 061 02 49506102 49506302 49508202 495 602 49507602 495076oz 495 .. 075 02 595 117 02 595 02 3 Pieces Nut Washer anti Machined Bushing Add S350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 other 357th alumnus Chuck Yeager alive well TV again again think single-seat Dornier-335 Air Space Museum Washington DCpossibly same wife Helen beginning push 70 pretty hard both still ac tive licensed pilots have dabbling RC several years am enclosing picture freehand scratch-builts little 50 Saito powered 514-pounderreferred Round big 13-lb 8footer named Mr Big Its powered Zenoah 23 Both fly very well Harvey Mace Ft Bragg CA Safety/Preston Continued page 22 letter stated story apparently first sur faced 1967 So happen prefer assem bling models components arc welding rather gluing also weareontact lenses dont alarmed saw warning National Newsletter Its just true Have another safe Fly Baby/Mathews Continued page 33 site Test range free surface movement deflections per plans engine carbure tor needle settings engine-on radio op eration Finally important make sure model balances slightly ward center-of-gravity shown plans Add ballast needed Dont fly model tail-heavy everything checks out OK Fly Baby ready big try field head wind add little right rudder advance throttle youre air borne 12 ft adding up elevator youre taking off downwind Remember climb rate func tion engine speed elevator Dont horse airplane around heavy-handedly gentle caresses thats needed Take model up bit throttle down dead slow Still isnt sinking much Find little thermal shut engine off Now isnt something kind flying too sedate taste try some slow-speed touch-andbumps Hows easy Did ever prettier Whatever style flying youll find Old-Timer will oblige Versatile brisk smooth responsive Fly Baby will exactly what want See yourself isnt up date Old-Timer could ask dB Facts/Abbott Continued page 35 erates Quiet whisper 20 dB Conversation 65 dB Loud orchestra 80 dB Start danger 90 dB Amplified rock band 110 dB Threshold pain 130 dB Federal agencies have established recom mended standards safe noise exposure eight hours per day 90 dB two hours per day 100 dB less one-quarter hour per day 115 dB Lets reexamine AMA FAI cri teria Current AMA90 dB 9 ft Old FAIl00 dB meter Current FAI98 dB three meters order compare recommenda tions need convert single distancein case 9 ft Thats easy enough involves converting meters feet meter ft applying inverse square law discussed above results Current AMA90 dB 9 ft Old FAI912 dB 9 ft Current FAI988 dB 9 ft As can see new FAI regulation considerably less stringent old 146 Model Aviation Matched Performance System TOP PERFORMANCE K&B ENGINES AirplaneManse K&B FUELS K&B Glow PLUGS 9 Blends4 Choices Free Flight Kits Supplies Rubber er Power Kits Scale Old Timer Too Co Electric Motors Rubber Tissue Cox Parts Rubber Accessories Winding Hooks Timers Nitrate Dope CATALOGUE $200 CAMPBELLS CUSTOM KITS PO BOX 5996 LAKE WORTH FL 33466-5996 Letters Editor Continued page 12 V
Edition: Model Aviation - 1989/10
Page Numbers: 14, 16, 18, 20, 22, 146
John Preston Safety12 Comes Pint Northamptom St NW Wasbinpo DC 20015 colunm provided addms Items concern mgardhw safety aspects model aviation acdvldes Contet die column however die opinion author does necusaflyimpumsent official position die Academy Model Aeronautics prop hand woh. Keep RC transmitter long use wing rubberbands Con tact lens safety fable MORE fingers-in-the-prop guess some truth proverb never rains pours Last months column began finger-in-the-prop incident stated first heard quite some time Just week after mailed column Model Aviation s editorial offices received letter Texan modeler Robert McMullen re lated MA Associate Editor Ross McMullen included color photograph right hand black-and-white copy photo should see color appearing column shows extent injuries resulted what appear about nine swipes propeller Ill let Bobs letter tell hap pened inside right thumb three palm right hand 10 x 6 glass-reinforced plastic prop turned good 40 two-stroke Im thankful following rule fly alone friend drove emergency room spent some 2 hours having 59 stitches put close wounds could 68-year-old man 40 years modeling experience let thing like happen Believe have given matter lot thought following excuse merely best explanation have able come up First plug clip old McDaniel NiStarter worn held glow plug no problem Telemaster 40 tricycle gear holding down engine also held plane true Foxbat its side-mounted engine system held Ni-Starter against glow plug palm left hand gripping entire engine thumb index finger restrain plane worked fine under normal conditions things tend change normal Second small factor believe con tributed accident gear pushed back slightly some rough land ings plane did sit firm taildown stance should have Third problem starting engine ap parently due glow plug would start just bump Sullivan starter would die Ni-Starter removed second glow plug no better put new starting upright-mounted engine just automatic note position throttle However case side-mounted engine apparently effort keep engine running opened throt tle beyond its normal starting setting Also several starts heated engine really comfortable grip held NiStarter place What happened next happened quickly just seems blur think about held NiStarter place hit spinner starter engine roared plane lurched dropped starter grabbed fuselage just behind wing sickening thud engine died knew hurt dly reflex pain con scious action gripped right hand t fist Evidently luck kept bleeding minimum pain told both thumb palm cut didnt know multiple cuts until doctor opened hand emergency room amazed little damage done tendons Continued page 16 pilot error no doubt about summer 1948 bought first model aircraft engine Atwood 60 came factory equipped glow plug first safety rule learned KEEP YOUR FINGERS AND HAND AWAY FROM THE PROP June 1 1989 brief instant failed obey rule result six chops across Score Propeller 9 human 0 Robert McMul len tells us happened him months Safety column moments care lessness eradicated record over 40 years caution Dont let happen \ . ON TOO MANY 14 Model Aviation 1~ U2BA$ Celebrating 10 years producing largest selection giant scale kits available today Design building integrity scale fidelity scale flight characteristics standard IKON NWST 22 kits choose STINSON SR8 1/5 SCALE 100 $37500 NEW VHS-4HOUR FORMAT \r~Y tape youve Ki waiting finally here! youre new hobby just want learn secret wood plane construction tor YOU PLANE VIDEO Presents BUILOINC IT RIC11T THF IRT TIUF FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON Radio installation o Straight wing building o Installing hinges 0 Shear webbing Applying PO cloth o Servo installation o Setting up new radio Built-up tail surfaces o Slab tail surfaces o Aileron installation 0 Fuel tank installation o New engine setup o Fuselage construction OBUILDING STRAIGHT o Installing pushrods o covering film o Eliminating warps o Aligning Balancing o Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have 17S40 MasterCard VISA ready call OR mail $24g5 S & H TO /PLANE VIDEO MasterCardP0 Box 2312B Des Moines IA 50322 Iowa residents add 4% sales tax 18003838251 telephone consultation orthopedist determined no tendon repair indicated will have limited use right thumb two months am also sure scar tissue will re strict use thumb permanently re ally could have much worse have gone over thing mind thousand times am now convinced lacked about T H-A-A-A-T much clearing prop first cut small across center swirl makes thumbprint evident pitch prop pulled deeper hand lick until resistance stopped en gine Writing has difficult First about much dare thumb embarrassment confessing such careless stupid mistake am doing thought mind may prevent similar accident happening other modeler never believed could hap pen mebut did Im glad Bob mentioned follow ing rule fly alone acci dent occurred Whenever Ive mentioned past columns Ive received critical letters some readers continue believe typ ical model airplane accident model will strike another person Therefore fly alone obviously sure way avoid such accident dont have statisti cally valid data back up would venture say typical model-airplane-related injury may require emergency room treatment self-inflicted other words own worst enemy comes safety flying field Ive said before Ill say again Never Fly Alone Continued page 18 old timer perfectly proportioned modeling Curtiss Robin 049 EngInes -channel A/C 41 Wingspan Electric Power OptIonal $22i5 v, viva Very few lull scale airorah ore ideally nuited model flight appealing aid curtis Rabin born iv spruce linen age beautifully pmportioned rubber electric glow engines Easy fan build trainer-like iv performance Flyhee Models Calalog 506 Pfovv 7031 2739593 FLYLINE MODELS INC USA Great American Hobbles ENGINES PLANES RADIOS ACCESSORIES FUEL COD-VISA/MC 1800-542-1199 INFO 615868-8213 PO Box 4508 Nashville Tennessee 37216 2-6 pm Central Time Mon thru FrI Closed Sat Sun 16 Model Aviation 1/4 SCALE 96 $19750 tIOA AA EDO FLOATS 1/4 SCALE 46 SPERRY MESSENGER 1/4 SCALE 50 $16550 ruat v Transmitter On/Off switches couple weeks ago helping judge Scale contest bumped Bill Musser flies Howard County RC club Maryland models usually have two engines Bill related re cent incident experienced involved new programmable radio just pur chased Since have no experience pro grammable radios dont know whether like Bill purchased receiver loses transmitter signal centers servos least thats way comes factory unless reprogram something else Anyway Bill fired up twin 40s scratch-built model proceeded make some engine idle adjustments doing transmitter neck strap became entangled On/Off switch before time react flipped switch Off position servos immediately centered themselves including throttle servo youve ever experi enced thrust two 40s half throttle will know few seconds Bill hands full Fortunately managed get things back under control model getting away him moral story re program programmable radio soon buy throttle servo moves fully closed position upon loss transmitter sig nal Another incident involving transmitter being inadvertently turned off reported Bob Bingaman Sunbury PA Bob pur chased new Airtronics radio control Flying Quaker model Bob finally got around building after thinking about some 50 years Following Bobs own words describe what happened chose Airtronics Vanguard FM sixchannel radio because meets 1991 RC equip ment specifications operation 20 kHz fre quency spacing didnt want lose Quaker interference other modelers Quaker flew beautifully Vanguard radio worked flawlessly However flight using throttle trim lever control engine slow flyby altitude about 100 ft Sud denly Quaker made sharp left turn its nose down dove ground No matter hard tried could get out its dive landed about 50 ft flight line happy did hit other fliers As Quaker lay ground thought might just well turn off transmitter surprise did have turn off al ready offi guessed using throttle trim lever inadvertently turned off transmitters power switch No transmitter no matter good will send out signal power switch Off position Bob believes transmitter should have equipped guard around power switch prevent its inadvertent operation memory correct seem remember about 10 years ago some transmitters equipped flipup cover over power switch Maybe RC transmitters should have On/Off switches located somewhere other front panel Any readers wish comment Rubberbands An article Transmitter newsletter Belleville RC Fliers concerning rubberbands recently caught eye didnt have credit Im assuming written editor Darwin Evelsizer Since Ive wit nessed demise number model airplanes OTYFUELiGAL 4GAL24GALSOGAL12BGsI 54 GAL TOTALS ordered MIXTUREI DRUMAMT RED MAX PREMIUM FUELII fuel beginners ft sport flyers should use Avell synthetIc castor blend RED MAX 0$999$749$729$689$599$150 RED MAX5$1152$864$841$772$691$212 RED MAX 10$1288$965$939$862$772$286 _______ RED MAX 12$1372$1029$1002$919$823$301 _______ RED MAX15$1458$1094$1065$977$875$336 _______ RED MAX RACING FUEL Trophy winner planes boets ft cars two boat blends castor ok up 40% nlcro RED MAX2O$1775$1332$1296$1190$1066$464 RED MAX25$1965$1474$1435*1317$1179$641 RED MAX4O$2539$1905$1894$1701$1524$774 RED MAX 50$2922$2192$2133$1988$1753$929 RED MAX 80$3305$2479$2413$2214$1983$1084 RED MAX 86$3497$2622$2562$2343$2088$1162 RED MAX 4-CYCLE FUEL Eliminates detonatIon ft kickback 4-cycle enginas smoother Idle ft mon power 104 CYCLE$1363 $1022 $995 $913 $818$296 154 CYCLE$1555 $1186 $1135 $1042 $933$375 RED MAX HELICOPTER FUELI Einremely smooth running extre defoamer drk color specIal heavy oil halicptrs lOHelcopte$1391 *1043 $1016 $932 8835$309 iSHeScoprer$1583 $1187 $1188 $1080 $880$386 RED MAX PERFORMANCE FUELI High flash point heavy oil use tuned pIpes ducted fan ft other heavy dty app S Performance$231 ________ 10 Performance$309 _______ lsPerforrnanceI $1200$900$876$804$720 _____$1391$1043$1018$932$835 ______$1583 $1187 $1155 $1080 $980 RED MAX PATTERN FUEL Proven best fuel pattern engines using pumps tuned pIpes 5 Pattern$1195$ 895 $ 870 $ 795 $695 10 Pattern$1375$1035 $1009 $ 926 $825 l5Pattern$1576 $1175 $1145 $1050 $940 SUPER TIGER 3000 FUEL Beat fuel Super Tiger 2000-4000 engines _____Superliger3000$1288$965$939$862$772 $225 ________ $299 _________ *375 ________ Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power performance never expected can have power Its phone call away Power today next week next year Red Maxs Secret gredients keep engine last ing longer 18 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN QTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD sdd $2 per cartonl Personal checks may held until cleared RED MAX FUEL Continued page 20 RED MAX DIESEL FUEL Superior diseal back list popular demand customers Ball Bearings $1767 $1328 $1290 $1164 $1080 DiinelPlakBeaings$l867 $1426 $1390 $1294 $1180 running _____ power fully other 100% money back guaran tee com pletely sat isfied reason Red Max has _____ more power better idle better wear char acteristics _____ other fuel $268 ______ Grand Total SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid$1288 $965 $939 $862 $772*284 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call prica Mm gallon boatscarshellcopters-speed-pattern-scaie-/u scale-kavsn-Ignitionst3000 PLEASE PRINT CITY STATE ZIP Quite few airplanes field espe cially ARFs use tried-and-true method securing wing fuselage rubberbands Two questions arise rub berbands use plane what after done tivine mans Dont look specific number Rubberbands vary too much elastic ity size strength number rieht Put several side crossed straight equally OK attempt pull leading edge away fuselage saddle ou can reasonable ease need rubberbands Put what think enough add tso wife kids grandma three eirlfriend mistress can also add two Aunt Matilda happen like Posttlight disposition done fly ing day best thing rub berbands remove airplane pick up ground throw away absolutel insist keeping take home squirt little dish soap hands thoroughl massage soap rubberbands next step rinse completely lay out paper towel dry Use second time THROW THEM AWAY Dont use twice hot sunny da throw away after use sun deteriorates rubber very quickly im going add tip own rubberband users Dont forget reinforce trailing otritued ott page 22 vYing pan 01 Engine 90 2Cyc Wing Area 1100 sq 1218 4cyc Mac hine Cut Wood Kit including wire landing gear & wing jaining hdwe VISA & MC accepted $120 Add 500 past & handling Add 300 far COD Ohia residents add 60% tax Far free Cata lag send SASE ta Air Flair1-513-878-7487 PO Box 2075 Pairbarn Ohia 45324 20 Model Aviation due use insufficient number deterior turn printer airfoil plotter sith.. ated rubberbands hold wing thought would good idea reproduce article FOILED AGAIN! lllI PLOT AIRFOILS IN ANY CHORD UP TO 24 INCHES MODIFY THICKNESS CAMBER & TRAILING EDGE PLOT SKIN THICKNESS FOR SHEETED WINGS ENTER DATA EASILY VLA iNTELLIGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION o INCLUDES I8PAGE ILLUSTRATED USER MANUAL $3995d Rq.' tOMPC T AT mbk cofl ,pen & pw SO Ae Odoo o~f25oJ5doAo 50~i 0000*0 '0 000000 CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 ~N\ \ORIGINALS/ A-i Husky Christen Industries represents rebirth classic Super Cub Byron Originals brings Husky complete scale components features totally unlike anything currently available Cub kits-features like detailed handlayed fiberglass fuselage cowl conventional wire cut wings operational cabin door scale single slot flap hinges scale strut anchors Easy gentle Cub-style flying natural Byron Husky ll-flap take offs 15 20 feet plus aerobatic prowess expected Byron kit youre looking traditional Cub flying flair excitement Byron Originals can bring end search Byron A-i Husky detailed Info-Pack send $200 Catalogs just $300 See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels edge wing root rubberbands pass over doesnt take long rubberbands chew up balsa trailing edge especially catch wing tip hard landing Contact lens warning True false Although didnt see apparently May 1989 issue AMA National Newsletter contained warn ing contact lens users received copy same warning over five years ago after checking out found based ac tual incidents facts What warning stated contact lenses can become fused cornea eye wearer looks electri cal arc eg welding arc John Worth recently forwarded copy letter received subject Vin cent King OD PhD Dr King Professor Optometry Ferris State University Op tometry Big Rapids MI has PhD Vi sual Science also 30-year veteran con tact lens wear has builder/basher model airplanes few years longer letter stated no basis injury eye wear ing contact lens caused exposure electri cal arc fact contact lens will absorb very small amount radiation will therefore provide some slight really inconsequential de gree protection energy radiating spark person wearing contact lenses no greater risk eye injury radiation source person wearing contact lens es found interesting newspaper clipping similarly debunking contact lens warning several attached Dr Kings Continued page 146 22 Model Aviation SPECIFICATIONS Wing Span 105Channels S Length 67WWeight 1920 lbs Power Super Tigre 2500 & 3000OS 240 Quadra 35/40 EquIvalent Engines aqp/Made Amerkzo CAJ JWith American Technology YMODEL EtlNESa BLUES CA getting down get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited RIC & U/C ENGINES 15 thru 61 Glow Plugs & Spark Plugs Ignition Engines 29 35 ORIGINAL REPLACEMENT PARTS Kraft 61 Cox Conquest 15 TestorlMcCoy Series 21 Taipan 40 HGK Forster Remco Viking twin DC 09 diesel Cott erte free information RJL Industries PO Box 5 - Sierra Mad-e CA 91024 818 359-0016 ETPQY SAFE oxv unique two-component epoxy laminating system developed offer user satest highest quality laminating resin available 1 Pt Kit- $1800 t- $2600 Glass Cloth 58 oz/sq yd 38x6ft-$90038xlSft-$1900 38 x 30 ft $3500 add $300 Ship & Hand above items Send SASE additional information AcPs Ughtweight composite Materials Order COD Send check Money Order AEROSPACE COMPOSITE PRODUCTS P0 Box 16621 Dept Irvine CA 92714 Source Lightweight Materials PRECISION MODEL PRODUCTS uzZZ7Is# Made U S BARSTOCK ALUMINUM SPINNERS Pan No Size TT-150-B .. 1-1/2 TT-175-B . 1-3/4 TT-200-B 11-225-B .. 21/4 11-226-B .. 2-1/4 FAI . TT-250-B . 2-1/2 TT-251-B . 2-1/2 FAI .. TT-275-B 3/4 TT-276-8 .. 2-3/4 FAI .. 11-300-B 11-301-BPAl TT-325-B . 3-1/4 TT-350-B /2 TT-375-B .. 3-3/4 11-400-B 4 RetailApprox PriceWeight $1395058 02 149509502 159510002 169516002 189515002 189519002 209517002 229522002 249520002 269526002 289525002 369534002 499547002 599552002 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add 5300 Per Spinner PROP NUT ADAPTORS Part No Size TT-140-A . 1/4-28 TT-147-A 4-28/7mm . TT-610-A 10mm TT-710-A 10mm TT-516-A '5/16-24 TT-518-A .. 5/16-24/8mm IT-BiD-A x 10mm TT-825-A . 8x 125mm TT-375-A3/8-24 TT-125-A x 125mm Retail Approx Price Weight $495 061 02 49506102 49506302 49508202 495 602 49507602 495076oz 495 .. 075 02 595 117 02 595 02 3 Pieces Nut Washer anti Machined Bushing Add S350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 other 357th alumnus Chuck Yeager alive well TV again again think single-seat Dornier-335 Air Space Museum Washington DCpossibly same wife Helen beginning push 70 pretty hard both still ac tive licensed pilots have dabbling RC several years am enclosing picture freehand scratch-builts little 50 Saito powered 514-pounderreferred Round big 13-lb 8footer named Mr Big Its powered Zenoah 23 Both fly very well Harvey Mace Ft Bragg CA Safety/Preston Continued page 22 letter stated story apparently first sur faced 1967 So happen prefer assem bling models components arc welding rather gluing also weareontact lenses dont alarmed saw warning National Newsletter Its just true Have another safe Fly Baby/Mathews Continued page 33 site Test range free surface movement deflections per plans engine carbure tor needle settings engine-on radio op eration Finally important make sure model balances slightly ward center-of-gravity shown plans Add ballast needed Dont fly model tail-heavy everything checks out OK Fly Baby ready big try field head wind add little right rudder advance throttle youre air borne 12 ft adding up elevator youre taking off downwind Remember climb rate func tion engine speed elevator Dont horse airplane around heavy-handedly gentle caresses thats needed Take model up bit throttle down dead slow Still isnt sinking much Find little thermal shut engine off Now isnt something kind flying too sedate taste try some slow-speed touch-andbumps Hows easy Did ever prettier Whatever style flying youll find Old-Timer will oblige Versatile brisk smooth responsive Fly Baby will exactly what want See yourself isnt up date Old-Timer could ask dB Facts/Abbott Continued page 35 erates Quiet whisper 20 dB Conversation 65 dB Loud orchestra 80 dB Start danger 90 dB Amplified rock band 110 dB Threshold pain 130 dB Federal agencies have established recom mended standards safe noise exposure eight hours per day 90 dB two hours per day 100 dB less one-quarter hour per day 115 dB Lets reexamine AMA FAI cri teria Current AMA90 dB 9 ft Old FAIl00 dB meter Current FAI98 dB three meters order compare recommenda tions need convert single distancein case 9 ft Thats easy enough involves converting meters feet meter ft applying inverse square law discussed above results Current AMA90 dB 9 ft Old FAI912 dB 9 ft Current FAI988 dB 9 ft As can see new FAI regulation considerably less stringent old 146 Model Aviation Matched Performance System TOP PERFORMANCE K&B ENGINES AirplaneManse K&B FUELS K&B Glow PLUGS 9 Blends4 Choices Free Flight Kits Supplies Rubber er Power Kits Scale Old Timer Too Co Electric Motors Rubber Tissue Cox Parts Rubber Accessories Winding Hooks Timers Nitrate Dope CATALOGUE $200 CAMPBELLS CUSTOM KITS PO BOX 5996 LAKE WORTH FL 33466-5996 Letters Editor Continued page 12 V